Hi yellowgrly22,
Dreamfoam, Brooklyn Bedding, and R&S Mattress are all sister companies that carry different mattresses with different prices and they each have different return policies although all of them certainly have some good quality/value options available.
There is more about the most important parts of the “value” of a mattress purchase in post #13 here which which can help you make more meaningful quality/value comparisons between the mattresses they each carry in terms of suitability (how well you will sleep), durability (how long you will sleep well), and the overall value of a mattress compared to your other finalists (based on all the parts of your personal value equation that are most important to you).
There is also more about the pros and cons of local vs online choices in this topic and the other posts it links to (in post #4 of the topic).
Phoenix