Resistance bands are starting to become a "must have" piece of home gym equipment. They are cheap and versatile. The issue is that there are wide varieties of quality. There are very cheap bands and sets available on Amazon and at Wal Mart.
We have looked at and tested a lot of the different sets, and if your objective is building muscle there is really only one brand and one model to get: The Bodylastics "T.O Bands" set. This is a version that football player Terrell Owens helped develop and put his name on. He actually set out to find a company to bring a world class resistance band set to market and sought out Bodylastics.
You can get a set for less then $100 right now (make sure to use this bodylastics coupon code for 5% off) for a product that will give you as much of a workout as you will get at the gym. But so much easier.
If you find a better resistance band product for the price, let us know by leaving a comment below. If it exists, we don't know about it.