Honestly, its probably a scam or he has horrible English and his posts are confusing everybody. But it would be a great deal if it wasn't a scam.
I'm not really impressed. This could potentially be a productive scam if he had proper English. The shipping cost on 80 units would be pretty lucrative. Is it possible to get refund on pre-paid shipping label? If the guy doesn't send the units you can get it refunded?