I bought a bolt of that muslin--same width--and it lasted for a long long time. I used it for everything and anything. It is very versatile and easy to sew. It is a very good buy. Have fun trying to use it up!!! 5 yards of 90 inch wide fabric is equal to 10 yards of regular fabric, so your purchase equals $2.75 a yard. Not too bad IMHO.
Sue