The $60 class likely doesn't include material, or anywhere near enough time to actually make the thing. And it might not even go over how to quilt it. A lot of quilt classes are just for tops!
Lots of people have asked me to make t-shirt quilts, some have even offered to pay a reasonable amount ($300 for a twin)- but NOTHING is going to get me to make one of those. T-shirts are a pain in the butt! (Okay, maybe not nothing. A really nicely phrased request from a niece or nephew for graduation might work.)