I was just there a couple of weeks ago. Yes its 50 euros for cbj and sex but some girls rip you off, charging you 50 for each one even tho you negotiated upfront that it's 50 for both. It's a lot of trial and error to find the right girl, I found the Asian ones less prone to rushing you and ripping you off. The 15 mins they all tell you is usually only 6.
It's not a great scene...its not private at all as every tourist can see you entering and exiting the windows but ppl stop caring late at night when the booze and weed are at their peak. 50 euros is a great deal only if you find the right provider. You won't find a scene in the world where its so brazenly displayed like this and so normalized tho.
Toronto is good because its more private but I'm getting tired of spending 120 + CDN for basic action. I get that you get kissing and more touching involved but There's no low cost option with many providers it all you're looking for is a quickie