[ownedbycats]

For video games, both Steam and GOG have the option to add funds directly to your account to be applied to the next purchase. (This is useful as one of my survey sites provide virtual prepaid credit cards and splitting purchases between different payment methods isn't really possible.)

In the Kobo settings, I see there's a "store credit," but can't find a way to add funds to it. Is it possible, or is this only for gift cards and refunds?

I did consider buying a gift card with my prepaid card, but then I'd end up taxed 15% on both the giftcard and whatever book I wanted to buy. Ouch!