It's a tough situation for sure. Buying recent model year Toyota trucks has always been somewhat of a questionable choice since they maintained so much value that new trucks were generally available for only a little more money. But now that new vehicles are hard to find it's very difficult all around. (my local huge volume Toyota dealer has literally 0 new 4Runners, when they used to keep 70+ in stock).

I think part of what we're seeing is also a general demand increase for older, simpler vehicles, as well as an increase demand in offroad vehicles. Even the 3rd Gen 4Runner market is going up and up. I bought a 2002 4Runner 2 yeas ago for ~$7k with 165k miles and sold it a year and a half later with 175k miles for $11k.

We all have our own budget constraints, but if it were me deciding between a 6+ year old 4Runner with 60-80k+ miles for $30k or a new model for ~$40-45k I'd personally go new.