I purchased a 1000 piece jigsaw just before lock-down from a charity shop for the princely sum of £2. It appeared to be complete, but after a week of frustration, I concluded there was a good reason why it only cost £2. So in the bin it went, and I thought of buying one online from Amazon. But at £15-£20 I decided to look elsewhere and found this free site, which gives you free access to a vast number of jigsaws.
You will not find any 1000 piece puzzles, but a lot of 100, 150 and some 200 pieces, which will provide some variation in your lock-down status.
