nice, i have a problem now

my gf parents ask abt same amount as yours, a roasted pig, 2 vsop, 50-100 boxes cakes, 3-5 tables. and said, probably not enough.
they also said no money buy gold for her, dont want do buffet for her, basically dont want use to use any money on her.
and there will totally no generous or no refund of the money. all my friends got almost all back. their parent just take for the sake of tradition only.
this will sum up to about 8k-10k alone. i need to fork it out myself.
total for wedding will cost about 40k at least, which include bedroom set, rings, photography, angpows and dinner.
if you wonder why my gf doesnt have money, her parent doesnt help her/give her money to save since young. it is so totally different to their son.
she still have to pay loan for her study, she live outside working, during college time pocket money also not enough, which i covered for her.
also please note they treat their daughter in very traditional
daughter way.
it is not like i am not willing to give much, but they dont understand what did they give to her daughter ? which make me reluctant to follow they request.
they did not consider we need to fork out a lot of money, they only considered themselves. yes financial ability is much better than them but money are not meant to spent that way.
to me they are just selfish, very selfish. i never see parent who give empty hand when children open house/wedding.
my friends gf parent helps in financial and non financial when they buy/move house. which they never do so, furthermore complaint and talk cock when we finished our renovation like the house belonged to them.
so on fire and complaint like nobody business.
Okay, this is a very common dilemma for most couples getting married. If you have the money and willing to accept such "extortion" then just swallow it up. It's only one in a lifetime thingie. After the wedding then you can just ignore the in-laws.
However, if you are unable to take it AND with agreement from your GF/wife to be, then don't pay them all they want. At first, negotiate NICELY. Say stuffs like not enough money and need to repay loan and commitment and most importantly...need to save up for future baby. Now the secret weapon is BABY. Say diapers, milk powder and so on are all expensive. Including needing to invest in insurance for the child's future. You only want the best for your kids. Hehe..they have to agree else it will looks like they are bad grandparents. If nice negotiation fail then it's time for war. Tell them downright, this is what you are going to provide...list them out. Take it or leave it. If they refuse then say will go for vacation wedding or only 1 sided wedding dinner. But to do this, you must have 100% support from your wife-to-be. Or else it won't work.
Goodluck.