Min amount: 0.001 BTC OR equivalent in other cryptocurrencies
Max amount: 0.3 BTC OR equivalent in other cryptocurrencies
It would be useful if the form I was using knew that, and would somehow show me rather than giving me the impression I could use your site to exchange significant amounts of currency. I wouldn't have found out that you don't even support exchanging a single BTC for CLAM until I had deposited my BTC and tried to exchange it.
Then the problem still seems to be there. You won't let me exchange 5000 BTC, but you'll let me exchange 0.3 BTC 20000 times? What's the difference? At some point you need to take your market depth into account. Why not just present your market data to the user and let them buy as much as they like?
The error message I see is that I don't have enough funds. I need to make a deposit to see the message about the limit - but until I do, I don't know the limit, so I don't know how much to deposit. Easily fixed though - just make a note that you only allow exchanges up to 0.3 BTC.
I'm used to exchanges looking like this, so you can pick your price according to the depth you want:
Click on the price you want, and the price, volume, etc. is filled in for you.
Fair enough. I guess I was looking at it wrong. If I look at it as "not finished, and not intended to compete" then my criticisms are moot.