Farking £2.50 now. Been going up gradually - although that is from the Greengrocer's down the road, not the feed merchant.
Only buy for my mare and she has 5 in a feed, twice a day, plus I put them in a ball thing for her to play with if she is stuck in for any reason. No idea how long they last me, but the dogs and the children pilfer them as well - and sometime I use them for tea 