Curious to know how you would get it for 30 shipped?
May be trouble finding the proper chainring for your desired gear ratio but I havent looked around myself.
Originally Posted by
Steev
It's no bargain to get a crank that you have to change the chain-ring on. My LBS quotes me approx. $1/per tooth for chainrings.
104 BCD cranks are designed for MTB compact sort chain-rings. I'd be worried about adequate support for the rings when you start getting much larger rings, if they even exist.

chain-rings priced per tooth