feeding size

So I bought 100 pinkies in Nov. when I got my first two corn snakes who were the same size. Jafar is now up to 26g and ate 2 pinkies plus one without a head, simply because it was left over from when I tried feeding a smaller one the head only. I just read on the Medusa chart that she should be eating fuzzies now, but the other snake that I got at the same time who was the same size has lost weight and is only 8g and refused the last two feeds. Plus I have one other tiny snake at 7g.
My question is rather than buy 100 fuzzies which I probably wouldn't be able to use by the time Jafar moves up another size is can I just feed enough pinkies to equal 6-7g? And then when I run out maybe I can buy the larger size next.
Or does anyone know of a good place to buy feeders that will sell less than 100 at a time at a decent price?

Do you have any herp shows near you? You can almost always find one or more venders selling Frozen feeders at a show. That way you could buy just the amount you think you need. Prices are always better than going to pet stores.

Take a small cooler. Have some re-freezable packs in the cooler, or ice. Easy as can be.

I don't know but will look into it.