Chair rental does kind of go up and down, depending on the season, but he says he's going in March, so price should be probably $15-20 for one chair.

BTW, Wahfried, if you don't know the procedure, just go find a chair that isn't occupied, by either a person or a towel, and plop down. The chair guys will come around eventually to collect. It may be an hour or two, but don't worry, they will come eventually. Make sure you have cash (US dollars is fine), as they do not take credit cards, I don't think. Never tried to pay with a card at the Perch either, but perhaps they take cards? I have no idea.