Hi Sam.Attress,
Welcome to the Mattress Forum! 
I do hope you’ll find the information presented here on the site quite useful, and I would begin your research with the mattress shopping tutorial here.
Regarding business membership here on the site, this is an invitation that is not offered lightly and there are many things that are vetted before such an invitation is proffered. You can read more about this in this post, post #1 here, our core values, and the membership information here. A bonus or discount is one of the things that retail members agree to.
Phoenix