I bought another north of $100 group from a long-time collector on another forum. He does sales throughout the year, building it up; usually sending me totals twice a year with the groups I've purchased. Ends up being bigger chunks, but less shipping.
In this group, off the top of my head and going by the photos
Various assorted "HO" scale plastic German fire engines, rescue trucks, ladders, and even a fire service crane from Wiking, ca. 1970s-early 1980s. Got probably 10 different ones for $5 each; as opposed to $10-15 they typically go for (or $40-50 new for the current, high detail versions of these trucks). I'm starting to build a 1/87 collection, but it can be expensive!
A few assorted "HO" farm tractors. I think one is Kibri, but the rest are Wiking.
Large scale Hubley Army Ambulance (said to be a Buick). Been wanting a Hubley, and it was down to "some emergency vehicle" (but their fire trucks are very crude), the 1/12 Ford tractors, or the Bell System telephone service truck.
Fun Ho! (made in NZ) tractor and trailer)
Various Matchbox Convoy NASCAR haulers. I'm not really into NASCAR diecast anymore, but have been wanting to build a collection of the older Convoy pieces, and these were cheap. Also, a loose trailer for one of my trucks that was free if I bought any of that group I showed before. I have several loose Convoy cabs that do not have trailers.
1980s Hot Wheels Sheriff Patrol
1990s Hot Wheels Fire Eater and Rescue Ranger (carded)
Hot Wheels Subaru BRAT (3-4 year old release?)
Tomica Subaru (forgot what model)
Some close-to-concurrent releases, including:
Matchbox Working Rigs Pierce Velocity 100 foot aerial platform Snake Bend FD (fictional dept.)
Hot Wheels Walmart series:
Camaro "California Highway Patrol"
Lamborghini Gallardo "Dubai"