How Much????

Just bought 10 cheapie 2032 for battery tealights used in panto.....99p! DH is the go to watch person round our way, he does minor watch repairs and battery replacement free as batteries are only pennies when bought in bulk.

Watch batteries are typically 20 > 50 pence each online inc postage.

So any increase is down to the labour cost being charged, as even a 100 % increase in the cost of the battery does not make much difference.
I bought 12 Panasonic CR2032, which are one of the most expensive for £3.99 (33p each) a couple of weeks ago. CR2032 are used in lots of watches, scales , key fob, ukulele tuners etc, which is why I bought 12 (I don't have 12 watches)

I have a watch which is waterproof and needs to be rescaled whenever the battery is changed. This is quite pricey at about £20. I did however pay for a "lifetime" of battery changes at Timpsons the shoe repair people a few years ago which has paid for itself and more.
I don't know if they still sell these deals but I know they are still honouring mine.

No, not because of Brexit. I bought a watch battery last year and it was around that price. They did fit it too though. Our local DIY shop used to sell and fit watch batteries but they got rid of their clamp thingy when a new shop opened nearby.

DH has just said that, JackyB.

I reminded him that the last time I bought a watch battery and asked him to fit it, he dropped it and it went down through a crack in the floorboards.

Had one fitted in our local jeweller's a fortnight ago £5.40, gone up £1 in 6 months.

Sainsbury English butter went up 45p in a week. £1.60 to £2.05 for 500g!

Many things are cheaper to replace than have spare parts fitted. The classic one is the coffee machine - the basic filter kind. Replacing the glass jug is usually dearer than buying a new machine.

As for the watch problem: You can get the batteries cheap in pound shops, but it's a devil of a job to get the watch open yourself without the experience, dexterity and right tools.

No just normal inflation. Poor old Brexit getting the blame again!