Several of my things have gone out of stock whether it's UK made mug boxes or Adkins heat blankets, people are getting ready for Christmas. Mug presses will go out of stock over the next month too, just as they do every year.
My biggest annoyance is 'replacement stock'. Try out a new product as a sample purchases, do your test prints, then the next batch is a crappy alternative. I'm going to do the research on alibaba myself next time and buy direct.