You're going to need $300 to $350 to get into a desireable low-end rig. Shure PGX is your best bet in that price range. I'd avoid Nady for sure, and I wouldn't buy Samson (but others might). AKG is good, but the GuitarBug models eat batteries faster than one per gig. In the under $200 category, you're essentially going to end up with junk that will piss you off so much you'll wish you waited.
Be
SURE to get
UHF, full (dual) diversity, whatever you get. VHF is awful, and single UHF receivers drop out too much.
Also, very important: You will get the best price from
Northern Sound and Light. Call or e-mail and ask them for their prices.
I am not affiliated with NSL in any way other than as a satisfied customer.