Just watch a bit and walk on.

You decide to save your coins for another occasion and just continue to watch the scene for a while. Most people around you seem to have the same idea and you start to wonder if they know something about the value of these coins that you as a new guest don't. One woman buys a feather and takes pleasure in tickling the blindfolded woman first in her armpits, then on her ribcage. The tied girl giggles and shrieks and tries to wiggle away, but her chains are too short, and she can't even anticipate where the attacks are coming from. The woman ends her torment with a few light touches to the woman's pussy, which makes her thrust her hip forward a few times, as if she's begging for a more intense feeling. The woman holding the feather just laughs softly and finally withdraws.

You think it's time to walk on.