I said Amazon RESELLERS. Not Amazon. The biggest titles of 3 or more months ago are the ones that have the biggest glut, and therefore the lowest prices.
Find a few Amazon RESELLERS with good inventory and prices, and contact them directly for purchasing a large quantity. $5 would be very realistic, since you are bypassing the Amazon commission.
Hie, am in Botswana and would like to find a distributor. Unfortuately, many of the distributors do not operate outside of the USA or Canada. The Amazon Resellers sound like a good alternative which I'd like to explore. Might you happen to have their contact detail?
All your help is appreciated.
King regards,
Jamila