Perhaps you are mistaken. They are not selling "complete Avalon miners" on their website. They only have a "complete" hashing card listed. A complete miner is going to cost as much as Avalon was selling them for.
Go
here. Note the "With ASIC" on the right-hand product. Now go
here. Note you have the option of supplying your own ASIC chips or buying the board with Avalon supplied chips (once they are purchased) for an additional $80.