I do all the time. I have coupons at Joann's but it is for a regular priced item....50% off. So I always look at what I want and if that is on sale... I'll get it but then look for other fabric I can use and get it for 50% off. I also buy tools etc with these coupons,..like that spray adhesive and templates
But last week and this past week..they had a 20% off TOTAL purchase which included all sale items too so I got the Keepsake Calico that was already 30% off and then with my coupon.. it was actually 50% off! I'll also use the coupon for batting and stock up on that when it is not on sale and I have a 50% off coupon. Threads too. I just yesterday bought a yard of Duck Canvas/cloth to change the cover on my board pressing board (not ironing board) and it was $10.99 a yard. With my 50% off it was $5.50 and then 20% off made it around $4.50 a yard. I was only going to get 1/2 yard, but forgot that when I had it cut and got a full yard! But I am sure I'll find a use for it..if not just save it until I want to replace the cloth again on the board! I also buy 1 yd with the 50% off...just cause I like it. Nice to have on hand and they sell a bundle of 5 Fat Quarters...all coordinating colors and they are $10 so with my 50% off they are $5 and then yesteday another 20% off that! I buy on sale so I have it when I need it and can't afford it!