Molish your own, as I did last year, when Sainsbury's had none in stock for my Christmas order last year.
They also had no mincemeat.
(This year, I've been unable to get raisins for MONTHS and there's no mixed dried fruit, though there might be mincemeat.)
Cobbled something with JusRol and 'mince' I'd made by microwaving loadsa sugar and whatever dried fruit I could find, together.
Also did cranberry & citrus.
Result was tons better than anything we could have bought.
Suggest you grease your pie tins with butter; makes a HUGE difference!