One of the things you were ranked on was PSP (extended warranty, but they beat it into your head never to call it that) attachment percentage. When a measure becomes a target...
Occasionally there was a loss leader sale item, and in those cases if someone wanted to by it without any attachments, it might have made short term financial sense to pretend we didn't have it, but I don't think the company could get away with that on a large scale.
Source: I also worked there during college. First in customer service, then as a Geek Squad supervisor at a new store, and I was sent to training at HQ up in Minnesota.
I proposed a counter solution--we just move the laser sensor on the door a bit higher, so that short people wouldn't trigger it.
In my store, on busy days, the manager would occasionally "greet" customers at the door for 10 minutes at a time. Coincidentally, the spot he would choose to stand would block the sensor, so instead of 20 customers coming in in 10 minutes, it looked like only 1 had come in.
The “team meetings” before and after every shift showed you the numbers from the previous day and your goals for the current day.
If your department didn’t hit their numbers, you’d get your hours cut or manager would get canned. Promotions went by how well you could sell, but you weren’t on commission.
They pushed for us to sell 2 black and two color ink cartridges with ink jet printers. Plus two packs of photo paper and two packs of regular paper.
They had a folding table setup at the front of the store w/ a PC running Excel, and every 15 minutes over the PA, each departments percentage of sales with extended warranties were read aloud.
The CompUSA I worked in in college was like a scaled down Enron. Bonuses were paid for hitting those percentages, period. At the time (late 90s), BestBuy was better, mostly because they were more diversified.
For constrained product, it makes sense to play some games. You can 10x your margins with the right customer.