Hey Mike. If trailers are now "banned" from Ebay, it must have happened in the last couple days, because I got a few three days ago. AFAIK 35mm features are the only "banned" material thusfar (tho I know they have been discussing canning trailers).
I usually splice trailers together based on subject (ie horror movies, ww2 movies, scifi movies, star trek movies etc etc etc. I even have 35mm trailers for tv show advertisements, ie X-Files, Millenium, Space: Above and Beyond etc. I have yet to actually see a tv ad at any theaters I have been to, but they are apparently out there (I have seen stuff like car commericals tho).
Right now I am in the Twin Cities area (Minneapolis/St Paul, MN, USA), but I am looking at a building in Chicago burbs as well as a building in Burbank, CA for theater conversion.
BM