Based on part count alone, these prices are terrible. 42129 makes 42070 look like a bargain! The tow truck is more or less reasonable, but that's about it.
It's highly doubtful this set is gonna be pneumatic. It's more than likely gonna be a C+ version of 8275 with the CAT license and a hefty price tag slapped on top.
Exactly. Bulldozers are cool but they just don't have a big list of functions, at least not enough for a £400 set. I'd say 42028 had the ideal size and price point.