Bit of a thread revival here! Tom can you tell me if the battery you bought at Costco for that price, was the Bosch Silver S5 008?
I can get one from Halfords reduced from £119.99 to £76.75 with the trade card, but that Costco price is unbelievable!!
Just for info TPS wanted £81.88 + VAT for a genuine one, retail was £100 + VAT!!