We are always looking for innovative new ways to display prints, as framing is expensive.
We used "Poster Hangers by Jørgen Møller" for the Mexican print exhibition. They looked great and did not damage the prints, but do leave the prints exposed (not under glass).
come in silver and black,
in various sizes
There is also paint now, apparently with metal filings mixed in it, that the magnets will stick to. So one could paint their gallery with "magnetic primer" and use the small but powerful neodymium magnets to hangs the prints.
Plastic lightweight large carrying case makes a huge difference for carrying 22 x 30 inch prints. With a couple of music stands, the carrying case becomes a print bin, which buyers can flip through.
Art Carrying Case --
and 2 On Stage keyboard stands -- KS7191