Well, I went to Menards (a big-box home improvement store here in the States) yesterday. They had a couple aisle-bins chockfull of diecast cars and trucks. I picked up 3 US WW2 deuce-and-a-halfs for $3 each (see my thread up in the WW2 Board). Relevant to this board, I also pickup up a Ford Transit Van and a Dodge Power Wagon. Both were $5 each, and were labelled as (and measured out to) 1/48 scale.
FYI, the van was show in someone else's thread on cheap diecast cars already.
Attached are pics of the trucks. The 3rd pic has a few Spectre Miniatures civilians in it to show comparative scale.
The Power Wagon comes in several paint jobs - see the pic of the back of its box (the last one below...). As you can see, I got the red one. If they have them on a future Menards run, I may pick up the Army one and maybe the US Forest Service one...and I'll probably repaint the gas can on the one I got.