I buy online for sales that are 3 dollars a yd and buy 1 yd of all the ones I think I might use.
I stock up on fats that are on sale and buy at least 2 of each pattern.
Charms that are on sale under 5 dollars with at least 30 sqs. and buy 3 of them.
For backing the cheapest sale price for a good color for a backing and buy at least 4 yrds for lap size and more for larger.
I dont buy much except notions at Joanns but last week fats were on sale for 79 cents so bought alot of them.