Assuming you're getting these at face value of $5 each, then get as many as you want.
You can try to sell them on ebay or elsewhere for $8-$10 each (more if you get a fancy serial number). If they don't sell, you can just re-deposit them and you're only cost is your time.
You can try to sell them on ebay or elsewhere for $8-$10 each (more if you get a fancy serial number). If they don't sell, you can just re-deposit them and you're only cost is your time.