Not true. When I worked at Game we were told that if you put the wrong price on somethinig, the shop has to honour it, hence being very careful about pricetags.
As for the thing where the new games cost less than the preowned ones - when Game buy a used game from someone, they'll generally give about 1/3 of the retail price to the owner (if it's a newish/decent game, otherwise you get barely anything) then sell for 1/2 - 2/3 retail price. But every now and then you get sales on stuff so the retail price drops below the amount that the shop paid for the preowned. They won't drop the preowned prices below a certain level because then they'd be making a loss.
Or somethinig like that, it's been a while since I worked there.
<spe> maevie - proving dykes can't fly
<Dor> You're levelling up and gaining more polys!