I do not buy speciality ruler often. IMHO basic rulers that you need are 6 1/2" x12 or 6 1/2" x 24. and a variety of small square rulers. I bought a 3 pack of square rulers at Joann that has a LARGE 20 x20" ruler. I do not use this often but it is great for cutting wider strips such as 10 1/2'" due it is longer so you get both width and length. You can buy most basic rulers at Joanns with coupons that make them affordable. However joanns does not sell many speciality rulers so those you must buy at LQS.