I feel compelled to review this product because I have used many packs of these and they work fantastically for blisters.
I've just used the Bandaid brand version a few times this week and they were terrible, they are tiny and the part that goes over the blister sticks right to the skin and tears it all off! Ouch :/
So, Compeed is definitely worth the cost, they never stick, seem to breathe, and you can leave them on for a few days if you have nasty blisters that you don't want to be rubbing at all. Good when travelling or if you play sports. The patch will eventually come off in the shower if you leave on.