Offers = keeping it.
It is the single best way to ensure you don't sell the item, but still manage to waste a whole lot of time (your's and other's).
The ONLY time asking for offers works even semi-reliably, is if you have something of decent value that you're willing to let go for way below market price (because mum wants you to pay her back, there's a pit bike you really want, or you need to fund a big night out...).
Put a price on it.