Good shapewear does not come cheap. One pair of mid-thigh shorts from Spanx can run you up to $75. Instead of shelling out tons of cash for something no one is ever going to see, you can find tons of cheap shapewear options on Amazon. These waist-slimmers and bodysuits have great reviews and most of them are under $20. Click through the slideshow to see our favorite inexpensive shapewear picks from Amazon.