Finally used bargainmoose40 today :-D Actually went on a bit of an ebook-buying spree...
Thanks for the tip about buying a Kobo Voucher - now my credit card company won't be weirded out by all the mini-transactions!
However, just to warn folks that if you have credit on the account, buying a voucher uses credit. So, let's say you intend to buy €25 worth of various ebooks but only have €5 credit left in your Kobo account. You might only buy a €20 voucher... but they use your remaining credit up on buying the voucher, which means it costs you only €15 but then when you add it to your account you only have €20 in your Kobo account instead of the €25 you intended to have.
Did I write that in a way that makes sense?