Gamma-level products are close to production-ready. They may have more defects than true production units, and firmware may have more bugs. Typically we'll release 100-1000 units on a first-come, first-serve basis.
We sell Gamma products at retail price, with a big rebate once you submit your testing report. We also stand behind the product with a full warranty, and offer a no-questions return policy for 1-year or more.
Gamma testers help us iron out the final firmware bugs, review packaging and documentation, and give overall impressions of the product itself.