Sad to see this - I was really looking forward to this set, seems a bit premature given a lot of people may have been waiting for the much awaited January pay-day before buying - but appreciate you and the vendors have more experience forecasting there than I do.
I would love to see this run again, if running again I'd perhaps say ditch the UK ISO kit - much that those are the only keys I use, I am more than happy to pay for a larger kit if it has the benefit of making the broader hobby more sustainable by avoiding having the international vendors buy out huge quantities of two kits they will never sell to meet MoQ, I'd prefer they buy out smaller quantities of a single larger kit.