Presto chango, it's a box spring!
Magic. My parents were skeptical, but the fact that there is A, a 100 day guarantee, B, personal pickup and no-questions-asked return policy, C, they donate the used mattress to a shelter, and D, it's made in the USA---well, all of these made this a no brainer. My first mattress that I bought wasn't a great experience, and this would be $150 more for trying something new. Absolutely worth it.