I take this as a sign they are trying to increase Mac sales. I for one am about a year later than usual on my upgrade cycle because the original 14" M1 is still speeding along. I can't be the only one.
Apple is usually pretty competitive on trade-in value. It's a ton of hassle to re-sell these days. eBay has gotten *horrible*. I've been re-selling my used gear for 22 years, and I've finally stopped. Too many people are trying to abuse the system and it becomes an expensive headache to fight those battles. Alternatively, you have the risk of meeting someone for an in person pickup, which may net you $100-$200 more than Apple would give for the trade in. Simply not worth the hassle.