Some of the best value at auction hides in mixed lots, crates of assorted stock where the whole goes for less than the best single item inside is worth. Biddurs lists mixed and mystery lots in most daily events, photographed so you can zoom in and hunt for the gems.
It's the reseller's favourite category for a reason: at a £1 start, one good find pays for the crate.
You get photographs of the actual crate or lot, often enough to identify most contents. Part of the appeal is what you spot that other bidders miss.