I have ordered several times from
Scrapyland. They have a good selection. I have an order in right now with
Scrap Mart. They have the best prices I have found & offer free shipping on QK, Spellbinder, and Boss Kuts. I bought from their booth at show, but this is my first time ordering online from them.
Archivers has great exclusive dies for QK, too! They don't sell online, but maybe there's a store near you.
Happy shopping!