I am very tempted to say this cost me nothing to make. The reality of course is that it didn’t, as all the bits and pieces used came from some project or other, although the lid of the cold frame was donated so that actually was free. The rest of the wood, screws, hinges and paint were all things that were in the garage or the woodshed, so not quite free but not far off.
I made it just before the start of the growing season and am happy to report that it has already started plenty of salads as well as the aubergines, squashes and melons that are now in various stages of growth in the beds.
It took me two days to finish, the main time was taken in waiting for the paint to dry.
Five minutes research on the world wide winifred gave me a design, the rest was fairly simple.
If I can do it, truly ANYONE can do it.