Should I repair this MacBook or buy a new one?

Hi,
I had a liquid spill on my macbook last week, gave it to the apple support for diagnosis...they told me that my logic board is dead and it needs to be replaced at 990 $. I got it just b4 3 months :'(
I really have no idea if I should go for it and get it repaired or should go for a new one...please give me some suggestions ..also if you know any place which buys macbook that are damaged like mine please let me know.