Whenever I can get tomatoes for under 50 cents a pound I always grab a few pounds to dry in the oven. I love to use them in pasta dishes or on a pizza. Yesterday I started out with 3.12 pounds of Roma Tomatoes.
I popped them in a 170 degree oven for 21 hours and ended up with 6 oz. of dried tomatoes. I think money wise I end up breaking even, but at least I know my tomatoes are fresh!