Just to put a concluding note on this from me ... as you might have guessed from Life and its ways to be irritating, Acme's purchase of the CD came too late to save CDBaby from posting my albums back to me, and the consequence (wouldn't you know it) was that I then received a restock request from CDBaby while I was still waiting for my albums to arrive from them. I contacted them, first to see if they had already posted the albums and then to see whether they would refund my costs, as I was now in for around $12 for shipping the albums back and a further £3.50 for posting the restock. My second email appeared to be ignored - I sent a further message via Facebook. That too went unanswered, and I was considering my options when I finally had a response yesterday. They have apologised and said that if they had known I was going to "push" sales of my albums they would have given me 6 months grace before anything else needed to happen. (If I had known that was an option I would never have responded promptly to their original message, of course!). They say they can't refund mail charges but have offered me a couple of options of payments in kind, neither of which are particularly useful to me but I understand this is their attempt at being helpful. I will make an account with Bandcamp as an additional distribution outlet, and make a decision nearer the time about what to do about any future recordings.
Acme - thank you for the order, and I hope you enjoy the CD!