wait 6 months, most stuff was announced at CES in early january, and the first few devices are starting to hit the market. By Christmas this year, you should have a decent choice.
although you're going to be hard pressed to find anything under $99

apple:TV2 or airport express).
except an airport express on eBay.
most of the amplifiers and stand alone speakers released have been in the premium price range.
although
pioneer just announced an
amplifier for $549, which looks like it's going to be a good base model.