I put these sets together because the pairs make sense. A cat scratches when she wakes, so the post stands by the bed. A tracker runs flat, so the tag is its backup. Two cats, two tags; two outdoor cats, two trackers on one plan. What I will not do is dress a pairing up as a bargain it is not. The crossed-out price on every card on this page is the two parts at today's prices, worked out by adding the two product pages together, and where the set saves nothing the card says nothing. You are free to buy the parts apart, and the vet notes on each product page travel with the set either way: the tracker is for cats over 4 kg on a breakaway collar, the felt balls are not for a cat who eats wool, and the bed size is chosen for the cat, not the set. Gary's post stands beside his bed, which is where a post belongs.