The A3 receivers that are available now are a pre-production or beta run. This explains why there is not many of them available right now.
A short time ago, receivers like this were given away for free or heavily discounted to a group of people called beta testers. But people like Iceberg and Scott from satguys helped put a stop to that sort of thing by selling their "free" beta receivers. Granted, it was more than just those two, but stupidity such as that coupled with economics put a big damper on the free pre-release receivers. Now you have to pay in order to beta test.