i have a 2007 with about 260K. don't really like the 5th gen appearance, but the last 4th gen. year was 2009. Happy with the v-6 sr5 4wd version. Wondering if it is getting really hard to find 4th gen models with low miles (sub 100k).
Yes, it is. But there are 4th gens for sale on here regularly and there's nothing wrong with one with over 100K on it.
100k is not a hard line, but my own experience is things start to wear out after 150k and repair expenses escalate.