Sounds like a shitty way of dealing to me

However I do have a suggestion for intersango:

I will typically transfer money there and just convert it all to bitcoins. I'm sure this is the same for most people. Right now I have to enter a bitcoin bid price (max price I'm willing to pay) and an amount (number of BTC I want to buy). Everytime I find myself calculating by hand (well, calc.exe) what amount of BTC corresponds with my EUR balance at the bid price I'm submitting.

Why not, besides entering a specific amount, adding a button 'as much as possible' (i.e. I want to get ALL the bitcoins that my euros can buy)

Thanks for your consideration.