Hi mtporter,
We don’t have the ability to do this kind of payment yet. Right now, each category thinks it’s a unique little snowflake and they all like to charge for posting.
As it turns out, solving this problem is a tricky beast because there are really multiple use cases we have to solve at the same time:
– Charge for each category separately (what we do now)
– Charge for each category differently
– Charge for posting in multiple categories as a single price
The last two are non-trivial problems to solve. We have them on our list, but we’re working on claim listing and recurring payments (now in beta!) right now so we’re not there yet.