Is the paid version supposed to work yet? I just tried to create a 2 day instance and clicking the "pay with card" button doesn't do anything. On a related note, does anyone know a good way to pay USD for things like this with a foreign (e.g. UK) bank account. If I use my UK VISA I get stung by my bank's criminal conversion change/rate. This is rarely something I need to do but it has arisen a few times now.
Primary use case is travelling abroad, but there's no reason it can't be used for purchases like this in foreign currencies (I've used it both ways myself).
[0] - http://supercard.io