Force single-product purchase

[sundflux]

Hi.

 

I'd like to know if there's any way to force purchasing only a single product in a certain category?

 

The exact problem I'm trying to work around is selling gift cards. In Finland gift cards must be accounted with VAT 0% and separated from the normal accounting/balances, and can't be sold with other products.

 

My plan to work around this was to hunt down some extension that would force checkouting a single product. Or something similiar. Like > Add a product category "Gift cards" where you could buy only a single product at one time with forced checkout.

 

Any other ideas how to approach this problem?-)