Technically, there is a bit of a legal issue. You can't actually sell 35mm film (entire movies, trailers or ads) as film because there are exclusivity rights, technically every theatre was/ is responsible for destroying every piece of film (or sending it back to the production company). But, of course people *do* sell lots of 35mm film. Some do sell on Ebay, even though it violates Ebay's policies, and they are frequently shut down because of it (some people do go for a long time, but not with bigger name, and newer Hollywood flicks). There is also a huge grey market of 35mm film, but I don't think that the film we have is what those customers are looking for (they are usually trying to find entire movies, or trailers from the 80's and earlier, most people who are trying to track down in this way want them in order to show them and no grindhouse is going to show a 35mm trailer of Twilight). Which is why I was considering selling them as a "supply" and not as something that could be projected and watched.. Plus a lot of the trailers I have are for movies that aren't really all that great, but would still make some great crafts!
Actually, you will have no legal issues with selling 35mm prints, and that includes feature films. No one cares about trailers especially. Ebay will not take films down and close accounts in this day and age because the studios do not care, as they are more interested in digital files should they want to screen old movies. Also, if you want to get into the whole 'legal issues' of copyrighted material then I will tell you for a fact that selling anything associated with the film, including advertising material (posters, press kits, lobby card sets, etc) is against the law. However, original movie posters and lobby card sets are easily available on ebay and many people have businesses assicated with memorabilia items, yet again despite this conflicting with ebay's policies no one will ever remove the items. Check any lobby card and you will see the disclaimer "This advertising material is loaned and not sold, and is the property of national screen service, and should be returned or destroyed at the end of the rental term) So there you have it, even poster selling is illegal because it is the copyright of the film company! Sell your 35mm trailers on ebay under the titles of the films, please you are worrying about nothing, as the studios will not sue you or threaten you with legal action. They're more interested in the real perpetrators who bootleg their new movies and re-sell them and stream them for free on the internet. I hardly think that someone selling a few hundred trailers for old movies is going to be of any interest to them whatsoever, and you can quote me on that!