QUOTE(zenix @ Oct 7 2015, 05:38 PM)
isn't spending real money something like DLC where people use real money to buy in-game items to have a leg up?
i guess i just continue to enjoy my open source mech commander firstÂ

Ah...OK...let me explain in greater detail. I'm going to assume you already know quite a bit about Btech since you play Mech Commander. Warning: Long read.
TL/DR summary: Paying helps you skip the grind. It doesn't give you a huge advantage over freebies.
There are 2 currencies in-game: c-bills and MC. MC can only be purchased with real money and can also be awarded from doing well in events. C-bills are earned from games and are used to buy mechs (except hero and champion variants) and weapons/upgrades. MC can be used to buy anything. Yes, spending money gives you a leg up but you don't actually need to do so.
Edit: One of the primary uses of MC is to buy paint colors and skins. Yup, people want to make their mechs look oh so pretty which is kinda pointless. You spend most of the time in-game in a cockpit. You can look totally awesome and badass for the guy you're shooting at though.

If you don't spend money, your mech will look very dull with stock colors.
NOTE: Champion mechs are no different from normal mechs aside from having an insignificant 10% bonus to XP gain. However, they do start upgraded with double heat sinks and stuff. Hero mechs earn 30% more c-bills and have unique weapon loadouts but most of them aren't any better than normal variants so spending money doesn't give you a huge advantage. It just reduces the grind.
Each new account starts with 4 mech bays. You can only own as many mechs as you have bays for them. If you want more mech bays, you need to spend MC although they can be obtained through participation on Community Warfare and are sometimes given out as prizes for event participation.
If you have been playing for the period since launch, you should have about 12-15 mech bays by now without spending a single cent. About 20+ if you were also active in Community Warfare. I have 50+ because I spent money.
You start with 0 c-bills. Complete the tutorial and you get 5 mil. Your first 25 matches gives you a newbie bonus that will add up to 8 mil when done. This means you have 13 million c-bills to spend at the start on buying mechs and upgrades. The prices for IS mechs are slightly cheaper than the official ones listed on Sarna. Clan mechs are significantly cheaper.
Full list here:
http://mwo.smurfy-net.de/Although you start with 0 mechs, there are always trial mechs available for selection. The lineup changes regularly though. The IS trials are champion variants, meaning they have been optimized with loadouts that are actually newbie-friendly yet are quite decent. The clan trials generally suck aside from the Stormcrows as stock builds have insufficient ammo for MWO. 1 or 2 tons doesn't cut it. Armor has 2x value in MWO so you need to shoot more. PGI hasn't quite gotten around to making champion variants for clans yet. Slowpokes.
Essentially, the trial mech selection is to ensure that newbies aren't outclasses by veterans like us. 2 years back, you had to play with stock builds. Yes, I had to suffer back than. You don't now.
Example...this is the stock build of the Orion-K
http://mwo.smurfy-net.de/mechlab#i=99&l=stockNow let me tell you how it sucks in MWO. Not enough missiles for LRMs. SHS means you overheat quickly. Having a varied loadout is great in Btech but is neither here nor there in MWO. You can't trade shots with dedicated LRM boats who will be packing 2 or 3 LRM15s to your measly 1. Up close, your weapon loadout is pitiful for a heavy.
Here's the Orion-K chamption which you can pilot on trial
http://mwo.smurfy-net.de/mechlab#i=156&l=stockNote the Endo-Steel and DHS upgrades. Also, the LRM has been removed for another SRM4 with Artemis upgrade and the AC10 upgraded to AC20. You no longer have the ability to fight at range but up close, you pack a dangerous punch. This is a full brawler build. The brawling Madcats will still kick your ass though. Don't mess with them.
If you really want your Madcat that badly, you actually have almost enough after your newbie phase to afford one but you'll have to grind a bit to earn enough to upgrade it.
Now...here's the tricky bit where it gets grindy
You need at least 3 variants of every mech in order to fully master it. If you only own 1 or 2, you will never progress beyond the basic skill tree. If you don't master a mech, you're actually at quite a disadvantage against those who did. Their mechs have +10% speed, are more agile, and have slightly better heat dissipation.
To give you a better idea, here's a screenshot:
» Click to show Spoiler - click again to hide... «
You can only finish training the basic tree of your mech if you own 1 variant. To progress to Elite, you must have completed the basic of 3 different variants of the same mech. To progress into Master, you must have Elite of any 3 mechs in the same weight class. If you have Elite, Mastery is not a problem.
(Note: don't let this worry you too much though. Even experienced pilots like me often run around with unmastered mechs cos we just bought it.

)
Here's the grindy bit. Winning gets you a base of 50k. Losing is a based of 25k. There are no costs for repair or reload although there used to be initially but it was removed. On top of the base earning, you get more based on performance. The primary measure of performance is damage (which sucks as it penalizes support builds and lighter mechs). There are also bonuses for kills, assists, component destruction, etc.
Anyway, if you're good, you get between 100k-150k per win. Possibly even 200k if you're that good. Your earnings are doubled if you have premium time (purchased with MC). If you're not so good, err...probably less than 100k.
If you lose...well, if you played that well, you might get up to 100k+ but you'll get around 50k assume you didn't underperform. You get the base 25k, you must have really sucked...
I think you're getting the idea of where the grind is. A Timber wolf is 15 million. Assuming you have a 50/50 win/loss ratio, that might average out to 80k (I'm being generous, its likely lower but you might be better than I think) per match which means you need 180+ games to buy one. Ouch. Than again, each game lasts between 10-20 minutes on average. Shorter than a game of DOTA2. Bout the same as a Heroes of the Storm game.
But once you hit our skill levels with better and mastered mechs, your average earnings will be higher due to better win/loss ratios and better overall performance. It does get less grindy. Also, there are semi-regular events that give you extra earnings. The community has also warned PGI about being more newbie friendly if it ever wants to do well on a Steam launch so there might be changes up the road.
Edit: Of course, you can also not join the herd mentality of piloting Heavy mechs and go for Lights and Mediums instead which are cheaper and easier to grind out for. A trio of Firestarters can easily fund your future mech purchases if you do well in those little killer machines. The Madcats are expensive cos well...clan. Clan tech is expensive. Play IS if you're noob. The clan pilots will kick your ass though.
And once you have 4 mechs, you hit this wall where you need to obtain more mech bays. Oops. Mech bays are 300 MC, 150 MC on the occasional sale. 1250 MC is USD7, 3000 MC is USD15 (MC gets more worth it the more you buy). So yeah...spend RM50...oh wai, exchange rate went up

) and you'll get 10 extra bays, 20 if you wait for sale. But like I mentioned earlier, there are periodic events that award mech bays. If you hop into Community Warfare, each Faction has an easily obtainable mech bay at Loyalty Level 2 which means you can pick up another 10 but you'll have to grind in trial mechs (sucks when you play clans). CW matches take 30 minutes++ not counting matchmaking time. If you get up to Level 6 for each faction, there's yet another bay but that is harder. There's also another bay at level 10 but let's not get ahead of ourselves. Even I'm not there yet for Clan Wolf.
You can also spend money to buy mech packages to skip the grind. MWO periodically introduces new mechs as a souce of income. Its essentially pay-to-play-early. New mechs are released first to those who pay with real money. After a few months, they will be available for MC and than c-bills in another month. That said, the available mech selection is already extensive. You can see in the Smurfy link above.
So yeah...its grindy...but you don't actually need to spend...see how much free time you're willing to put into this.
This post has been edited by arubin: Oct 7 2015, 09:10 PM