Hi DH333,
The mattress shopping tutorial includes this link to a list of the members here that sell mattresses online and many of them make latex or latex hybrid mattresses that use different types and blends of latex with a wide range of designs, features, options, and price ranges.
Posts #3 and #4 here also incudes some of the lower budget latex and latex hybrid options I’m aware of as well.
Some of the better options or possibilities I’m aware of in the Tulsa, OK area (subject to the guidelines here) are listed in post #2 here.
Most online companies have some type of return or exchange policy but the specifics vary widely between companies and sometimes between specific mattresses (for example component mattresses allow for individual layer exchanges that aren’t possible with most mattresses where the entire mattress would need to be returned or exchanged).
Phoenix