How about some anecdotes on this topic?
"Lifetime" memberships:
In the 80s I was living in the barracks at Travis AFB, and several of the guys ran out and bought "lifetime memberships" at the new video rental store that opened in Vacaville for a little over $100. You see, youngsters, that's how it all began; you paid for a membership that allowed you to rent VHS movies. The problem was that nobody asked whose lifetime. The company sold several thousand memberships and disappeared in the middle of the night, taking the VHS tapes they had in the store with them. I expect they reopened under a new name somewhere else.
Extended Warranties:
Some years ago I bought a Sony CD carousel player; it was the ES series with the fine wood side panels. Because this was Sony's top of the line player it came with a THREE year warranty instead of the typical two years. I bought it at the AAFES BX, and purchased the one year extended warranty as well. The extended warranty was a card that hung on the shelves all over the electronics department and you simply took the card and the cashier would ring it up with your purchase.
Just after the OEM warranty expired I noticed the player began to skip now and then, so I contacted the extended warranty company about getting the unit serviced. Their phone number was dead and after some research I discovered they'd gone out of business. Shortly after that I was in the BX and noticed the extended warranty cards were still hanging in the BX. They sure looked like the same cards; same type font, same graphics, almost everything was the same as the now defunct company, except the name. Scam. Sell extended warranties, honor the ones you've sold until you reach a certain point, then go belly up and reopen under a new name and start all over. The BX did refund my money on the extended warranty BTW.
You Cannot Beat This Deal:
When my son was born in the early 90s we went to the Thalhiemers store at the mall near Charleston AFB to buy an 8mm video camcorder. I was NOT impressed with their prices but the wife wanted one today and I caved. The salesman tried to relive my fear by informing me of the store's low-price-guarantee; if we could find the same camcorder anywhere else for less, even up to 90 days after the purchase, the store would beat the deal plus refund 10% of the difference. How can we lose? Only a few days later one of the local electronics stores had the same camera for a couple hundred dollars less, so I called the Thalhiemers store and was promptly informed that the camera I saw in the competitor's ad was NOT the same camera. You see, we purchased a Sony F56 camcorder, and the competitor was selling a Sony F55 camcorder. What's the difference you ask? Other than the color of the plastic on one of the sliding covers- NOTHING. Oh, you also cannot buy the F56 anywhere except Thalhiemers; that model number is exclusive to Thalhiemers, thus you will NEVER find the F56 in a competitor's store.
Selling It:
My wife wanted to take a class at a local college and decided to buy a cassette recorder to tape the lectures. We went to Circuit City to see what they had. She was looking at the display rack of recorders and I was lingering nearby as a salesman sidled up to her. She told him what she planned to do with the recorder and he, believing her to be an ignorant lone female, began to circle like a hungry shark. He chose the most expensive recorder and told her, "This one has VOX, which is voice activated recording. That means it will only record voices and ignores all other sounds." I turned around and confronted him, "It does WHAT?" (In case you didn't know, VOX just allows a threshold to be set, so the recorder does not begin recording until a level of volume above that set threshold is reached. Sort of an auto- recording feature that has nothing whatsoever to do with human voices.)