I spotted a hot deal on Amazon, which may make your back very happy! The Angel Sales PosturePro Lumbar Support is marked down to just $2 (from $19.99). I checked around the web a bit, and this is an amazing price, even with the $3.98 shipping! This Lumbar Support sales for $12.99 at Sears. If you sit at the computer for long hours, like me, then a little extra Lumbar Support may do you some good.
Amazon prices are always changing, so this price is not guaranteed.