That really annoys me too when people assume finances mean the same thing to everyone. A new Kent single paddle is GBP is £120.10 with shipping to the US. $157.16 at current exchange rates. I'm sure it would sell instantly for $100 if you wanted to sell it (heck, I'll buy it for $100 right now if you want to sell it.) $57 to try out something is pretty trivial. Oops - I just assumed someone else's finances. See? It's just not true that you can use a double paddle like a single but not vice versa. It's true you don't have to use iambic keying style, but the feel is different and it's possible to close both at the same time accidentally. A decade of practice in the late 70s into 80s didn't get me around that so I just switched to a single and problem solved.