I'm not dissing the FG--it's my favorite old Nikon, and I have two of them. But the general market doesn't appreciate them. I've got an FM, too, and the FG mops floors with FMs. To me the FG is just a mini FA, complete with the lovely finger grip that I won't live without now, and as such it's a great carry-around camera.
I usually find that kind of deal through Google, not via KEH's website. The KEH site has all sorts of hidden nooks and crannies where they stuff strange stuff. But once in a while you'll see it right there where it belongs, too--I think the FG was right in there with the rest of the bodies. Every once in a while I'll see off-brand lenses for $1.39, too. It's worth cruising their site for fun occasionally, just in case.