None.
I play acoustic. Gave up electrics when Henry got the boot, so since then I haven’t looked at what pickups cost cause there is no need for me to do so.
I can go down to guitar center and go into the acoustic room and there are guitars that cost $299 and guitars that are $2799. I am sure I can go online and find pickups for dirt cheap or get Lollars (which I remember when I was into electric's) were expensive. The whole range is there.