D.S.
depends on the seller. some buy it on clearance and resale it. some have an employee discount at theri store. some times an store will clearance stuff in an lot just to get it out of their store. and someone buys the lot and resales it.
Now if they have a home store they have no overhead rent like a regular store. they buy it at cost and can sell it for less than the stores do cause they have no overhead. There is a lot of ways of doing it. Sometimes it will be stolen. you just can't tell.