The price is an absolute joke. At 2000 HUF for one journey it would be expensive but not entirely unreasonable. But no they only sell 4000 HUF two way tickets which is for 60s journey time and most people will only go up and walk back down. You could get a taxi from anywhere in Budapest to the top and it would probably be cheaper. They rely on tourists who have no idea what 4000 HUF actually costs and are too hot or confused to realise what bad value it is.