mattress consultant?

Hi:

Does anyone know if there is such a thing as a mattress consultant?.

I posted my problem a few days ago and did not get any responses.

I’m looking to solve back pain by trying different toppers on my new Arizona Premium Ultimate Hybrid. It currently has a medium latex topper.

I would like to hire someone to do the research, procure the items and make returns if necessary.

I live in Los Angeles.

Thank you!

Ellen