[Richard Crowley]

adam79 wrote:
....Mics are also aren't returnable cuz of the "germs" from
singing into it. Please help advise.

If Guitar Center, et.al. doesn't want to take mics back, then
they should just say so. This is the kind of thing that gives
those retailers a bad reputation. There is no such "law" or
"rule". Else mic rental would be illegal, and there would be
no public telephones, etc.