I don't use much pectin, either. For some things, such as figs, I don't use any at all.
I've been making batches of blueberry preserves, and have been using some grated apple with the blueberries as they cook. Towards the end of cooking, I add about 2 or 3 Tablespoons of pectin, and that's been making the preserves pretty firm. Actually, perfect so far.
I buy pectin at Sav-a-Lot for 99 cents a box.