Commission?? I dont sell or have have anything to do with that company other than being a customer, unless you meant something else.
I pay with western union and usually a $10 fee per transaction. Expiry dates on products i have no idea as i dont have them long enough to worry about them. But i couldnt see them being harmful or less potent if they were used past their expiry date. Tablets are in individual blister packs, if that helps.