Hey all,
Just registered to say I am super excited about the Marketplace 
I use Unity’s similar service both as a seller and as a buyer, and I really hope uploading content will be available soon!
- About quality, yes, a rating/comment system is essential, though it should allow the creator to reply, and be moderated when necessary.
- The team should check everything before allowing the public to download them, this is essential to keep the quality high, and it is similar in the UAS. Unity has a separated, dedicated team to handle this.
- Unity takes 30% from the income and doesn’t want exclusivity, which is pretty fair (Turbosquid takes 60% with the same terms…). I think something similar would work here too.
- Having a ‘registration fee’ is an interesting idea, and would help weeding out the bad stuff, but this is essentially what the moderator team should do.
So anyways, thanks for the Unreal Team for the Marketplace