So today, I went into the vet's office to pick up flea & tick preventatives for Thing 1 and Thing 2. I was prepared to spend a good chunk of change because I had cards for buy 4 months get 1 free and buy 6 months get 2 free. Since this flea season has been horrendous, I figured I'd stock up since this is a product I use often. As it turned out they were out of the 4 and 6 packs of the flea meds for both of my pups! So, the vet gave me the single dose meds for each pup FOR FREE to tie me over until they get more back in stock!
Straight up FREE is much better than buying 4 to get 1 free! Granted this is not a usual occurrence, but with a limited budget, I'll take the free meds any day of the week!