I built a swap site for finished jigsaw puzzles because I have like 20 of them just sitting in a cup

Every time I finish a puzzle I love the process of completing it the first time but then I am stuck: I don't want to do it again, selling one puzzle at a time online is a hassle, and it just ends up in my cupboard, and then I go on to buy another one for £20 just to do the same thing again. I figured there had to be thousands of people across the UK in exactly the same spot, so why not swap instead of shelve? That's the whole idea behind London Puzzle Exchange: list a puzzle you've