Yep my last time at Vertigo it was 500 baht a glass of wine....I think a beer was 250 or 300baht...which unfortunalty is very expensive on thai standards...but the view is amazing on a clear night....and you get what you pay for...
If you can plan on dropping like 40 to 50 bucks you can have a very nice hour and get some pics that are worth way more than that....I have a framed pic of me, my dad/mom and mrs atl on top toasting a glass of wine that I wouldnt give up for anything..