Just listen to some of the wacko adds on the tube, Bob's, Bernie and Phil's, (NE) quite often they offer complete bedroom or living room sets for less than I can purchase the stock let alone mill it. Has to be done over seas.
2 1/2 yrs ago when we finally coughed up for a new water bed, the old one was over 19 yrs old. New mattresses don't measure the same as really old ones so we needed a new frame too. Plus I wanted to raise the matress off the floor considerably higher than the old one.
Some of the wood and metal frames offered at "Bed or Rest" were nice and were anywhere from $1000 to $1600. The mattress, liners and heaters cost something like $1100 on their own, big diff from when the 1st mattress, liner and frame was bought and built. I bet all total I spent maybe $350 total.
I built and trimmed our platform out of Oak and Mahogany with drawers, 2 heating pads instead of one (spreads the heat out more evenly and allowing for a lower temp settings). Our frame is nicer insulated, and much more solid than offered in the stores. By the timwe I was done I had spent just over $1000 on all frame mat but have a superior platform.