I've been buying my CR2032 batteries from Amazon - they say that they're duracell/panasonic/whatever but they seem to have a shorter life than the super-pricey ones in the supermarket. I suspect they might not be 100% legit.
Does anyone have a good source for them that is cheaper than the supermarket but not the dodgy quality ones?
How many do you want?
I buy from CPC.
As the Royal Mail won't carry these, they have to go UPS.
That means free next day delivery on the whole order which would otherwise cost £2.99
Maxwell,Renata,Panasonic Sony.
From the bay, UK sellers, most reputable sellers give manufactured by, or best before dates.
Buy as you need them, don't store them a long time or the power will diminish.
How much is super pricey to you?
B&Q have some for £1 at the moment, normally £2. Or £3 for 2 (normally £4) for Duracell.
http://www.diy.com/search?Ntt=cr2032
Screwfix 2 for £1.99
http://www.screwfix.com/p/coin-cell-batteries-cr2032-pack-of-2/4059K
I usually use Battery-Force for all my batteries and usually go for GP but I see the multipacks of 2032's are out of stock at the moment.