Auriol Compostamatic frame and liners (Long Melford CO10)

This is garden compost maker comprising a four section wire frame that holds a large plastic liner. When it's full you seal the top, remove the frame, and reassemble it somewhere else. I think the bags hold about 150 litres of compost when full. There are about seven liners, some used, and two still in their original packaging. As far as I know they are no longer made, so it's quite a rare thing!