Walmart has a few quilt sets on rollback, with some great prices, including a couple of sets on for 50% off.
Both sets that are 50% off are the Mainstays brand. I see one review for this brand of quilt, basically professing their love of the product. The first quilt is the striped quit set with pillow shams in pink stripe at the double size. Regularly $39.98, you'll get this quilt for only $20. That's an awesome price for a double size quilt! Great for a child's bedroom or a guest room, the design and colour and nice and everything is machine washable.
The second one is a patchwork global set and I love the patterns and colours of this one. Again, this is perfect for a child or guest room, or even yourself. Also $20, was $39.98.
I absolutely love this dinosaur quilt in twin/full. It has such a cute design, which I know my dinosaur-loving son would love. It was $39.94, now $30.
Walmart always offers free shipping, so any of these quilts will have no extra costs attached.
If none of those quilts meet your fancy, there are quite a few others at great prices too.