To answer your question - I would not pay more for gongs to have them primed or painted. Hopefully we can actually hit the things and won't be much paint left anyways. The raw metal ones that I have here will get some red-oxide primer to slow down rust - give it a blast or so with some bright colour when we go out. We are working on quick, cheap, stands made from poplar branches - pretty much free here - need to refine plan to make them up in a couple minutes without too much fussing - not so much into store-bought stands for shooting at, but we might end up there if we can not make this idea work...