I love ponywear that's cheap, especially shirts and such that cover the body. I only bought one MOC because it was $12 before shipping and I liked the art. It was the baby bunny suit, which is about $20 loose and complete.
I just wish more ponywear fit g1 boys. I commissioned one so I could get a Captain Kirk cosplay, just not sure who should wear it.
My current favorite use of ponywear is for my G1 baby pony nursery. Most of my ponywear is G1 withe a small smattering of G3 accessories. I'd love some G2 clothes and costumes eventually.