Anyone have any experience with this crevice wax spray stuff that seals crevices you can't reach by hand???
If so, what kind of price am I looking at?

It's called "Cavity wax" and I believe 3M's is part number 08892 for the aerosol and 08891 for a quart. I use it all the time at work but we shoot it with a pressure pot and long "wands" that will go way up into the rockers and things like that after they are welded on to coat the inside. Cool stuff.