To be clear I believe the op that he got the offer. I just am not sure that the person that gave the offer to the op is trustworthy based on the low price.
that's right sounds to good to be true., either pickup in person and check out under the cover to make sure 4 ASIC boards & controller boards are there, and better still test them.
or use escrow if not picking it up. JohnK is trusted escrow here on bitcointalk. the fee would be money well spent.