At first I was tempted into buying the Therafoam memory foam mattress, and then the price scared me into the moderate brands like Sealy Posturpedic and others like it to save money.   But what I realized was that the top two inches are all that really makes the difference in your memory foam bed, so why go to thousands of dollars of expense when you can pick one of these up at costco for 70 dollars?

As I look at it, one has two options. If they need to change their bed due to sleep requirements, couples can get a cheap or even used mattress, go to costco, and buy a memory foam topper and they...