18 Questions you should ask before buying a mattress

1. What is the size and weight of the people who will be sleeping on the mattress?
2. How much space is available for your mattress (and bed)?
3. Will you be sharing your mattress with a sleep partner? If so, do either of you toss or turn as you sleep? Do either of you frequently get up at night? Is this activity interrupting each other's sleep?
4. Is the mattress flammable?
5. What are the terms of the mattress warranty? 
6. What is your return policy?
7. Is the mattress a standard size?
8. Will the mattress need to be turned or flipped to maintain its shape?
9. Is the mattress available in different "comfort levels?"
10. Will you provide a frame for the mattress?
11. If buying a memory foam mattress - what is the density of the foam?
12. If buying an innerspring mattress - what is the coil count?
13. Does the mattress require a box spring?
14. Is there a fee for returning my mattress if I dislike what I buy?
15. How will the mattress react to body temperatures?
16. What is the price of the mattress? 
17. Can my purchase be financed?
18. Is rent-to-own available?