a few years ago I put a Kill Bill 2 banner on ebay after we had finished with it, but it was still in season. We got a phone call from the distributor finding out if it was us or if it had been stolen. When we said it was us, they told us to take it off immediately or face prosecution. So we took it off. We were told you could sell it once it was "old" but they wouldn't specify how old, "old" was. So after 6 months, i contacted the guy who was the highest bidder at the time and he bought it. So be careful about selling the "good stuff" early!!
In Australia we have to pay for our posters and trailers, and yet we still do not own them..it really sucks, especially as the video shops get them for free. We have to send back our trailers too!