Bro you play EU server. Dunno how much is EU items r worth though.

Try to upgrade your DEX to minimally 1800-2000.

Upgrade to play more on CC and CD with IAS.

Try upgrading your pants, shoulders and helm 1st as other eq might be expensive, and see how it goes after that.

Refer to the 1st post, there is a guide on how to beat Ghom.

do u have CC and CD? I beat ghom with 20k dps i think with some CC and CD, probably LOH 300-400 only..lol. But I died like 15+ times before kill him.. 
You probably can do it easier..hehe.

with 6k armour and 650 AR u can use MoC+overawe liao. Also, use SW+cyclone lor. helps u kill faster. I used MoE and MoH few times but nowhere close to killing him..

U need to spot how he release his gas also, so your running and timing to avoid the gas not so damaging to u..haha.

kite is the key. If you don't have 2.4k LoH like what ALeUNe, or 100k dps like LifeX or so, kite.

Upgrade Pants, Helm, and Boots for a start.

If no open socket and no chd > 65, the fair price should be not more than 10M.