I got this hammock off of Amazon for a little over 20 bucks, with straps included. It's pretty comparable to my eno, except the carabiners are steel and quite a bit heavier.
If you are sewing inclined, you could make your own out of polyester instead of nylon, it's much more UV and abrasion resistant. Ripstopbytheroll carries a lot of different fabrics and you can buy a hammock kit that includes the right amount of fabric, all the hardware and the pattern.