McCoy made some interesting items and a whole lot of low-end rolling stock. What you see mostly on the Bay is stuff they made for various TCA conventions. Most of the convention cars go really cheap, because there is no collector interest, the graphics are typically billboards for the theme of the convention, and a lot of them are really, really ugly. The good news is, many of the cars have the graphics applied with easily removed stickers rather than decals or printing. I've accumulated a bunch of them for under $40 apiece and one of these days I'm going to repaint them.
McCoy did make some cool items, notably a circus train (which is not an Ives copy). Their one-and two-motor Cascade electric locos are highly sought after and bring good money on the Bay, as do their steamers - a 4-4-0 and a 4-6-0, if I remember correctly.
And finally, the coolest McCoy item I've ever seen just got posted on eBay, from the collection of Bob McCoy Jr. Unfortunately I don't have $1700 to drop on a tinplate locomotive just this minute, but it is pretty neat. The description says only 4 were built.
http://www.ebay.com/itm/290777647443?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
