Aren't the two linked?
No. You can have a cheaply priced product sell like hotcakes, but if you only made a certain amount of those products and completely underestimated the demand, then those few cheaply priced products all of a sudden end up on eBay for outrageous prices, of which you as the producer of that product make nothing but the original cheap price you sold it for. It’s just like what happened with the Nintendo Classic.