There's a ton of that stuff on eBay. I've got a variety of items like the Tamiya model and battery-powered 4X4 models, the mini and mid-sized R/C cars, Hot Wheels, Hongwell-Shuco diecast. Just let me know what you're interested in and if I can't help there are plenty here who can.

P.S. - You comin' to the beach meets?