Yes, the seller is PetMeds, address is
Unit 3-6 Frogmore Ind Est,
London NW10 7NQ
Yes,...the wording on site is as follows...
Cosequin for Cats Sprinkle Capsules
150 Sprinkle Capsules £7.00 .....
then it had a box for which to choose the amount needed e.g 1,2,3 etc,....
then the word 'BUY', which you had to click to add to your shopping basket.
hope this helps....if you send me an email address, I could possibly send you a copy of my receipt...(Although I must warn you, I'm not a computer whizz, so maybe I could 'try' to send you a copy of my receipt...haha...!!)
I'm unsure of what you mean by
' ...they cannot be forced to perform the contract for a non specific item '
Also, I've worked in retail before and for example...
If a customer goes into a shop and the item's price point states that the item is for £1.50 and then the following day/week, the item has gone up to £1.99, but the staff have not removed the old price point of £1.50...the customer is then entitled to have the item at the lower price of £1.50, due to the fact that the retailer has not removed the old price point, as it's the retailers duty to make sure the correct prices are on the correct items...