They did increase the base Ram for mac configurations in late 2024 from 8GB to 16GB.

While it wasn't a strict price decrease it was an improvement to the base model. The 24GB m3 air I bought a few months earlier would've been cheaper due to that if I held off for a few more months. Now w/ the price hikes the price I paid is now cheaper than buying a 24GB m5 air.

Sure, quite often. They usually have a price target in mind, but their costs and margins mean they can't always hit it.

What's rare is that this is a price adjustment on existing shipping models, without a corresponding new model. I remember them doing price drops with a few Intel Macs in 2023, but otherwise the only example that comes to mind is the original iPhone.

Yeah, they did it quite a bit in the 20-teens. Wasn't uncommon to see an event where they finished announcing an upgraded model of something, then had a slide where the current price fell away to reveal one $100-$150 lower.