• AudioTechnica (Japan)
• Karsect (China)
• MiPro (Taiwan)
• Shure (USA)

This short list gives us entry level models that are usable in sets of 10 or more and that range from $200 per channel to $590 per channel with 2 nice steps in between at $350 and $460.

Brand/Model	Channels Usable Simultaneously	Entry Price per Ch.
Karsect - KRU162	16	$200.00/channel
AudioTechnica - ATW2110	10	$350.00/channel
MiPro - ACT707DE	16	$460.00/channel
Shure - SLX14	20	$590.00/channel