Hi sue,
Plushbeds uses good quality materials but while they are “better than average” value … they are not in the “best value range” compared to other online choices that use similar materials and have the same or more options available in terms of selection and have better value. A forum search on “Plushbeds” (you can just click this) will bring up many posts about them with more information and some comparisons with other manufacturers.
Some of the better online options I know of are listed in post #21 here. Alll of these are invited members of this site which means I consider them to be among the best quality/value in the country.
I would also treat your mattress purchase and your adjustable bed purchase separately so you are comparing apples to apples with each part of your purchase.
Some of the better adjustable bed choices in terms of value (and the ones I use for price references) are …
http://www.adjustabeds.com/ (a member of the site who provides a 5% discount for forum members on most but not all of their adjustables)
http://www.adjustablebeds.org/ Carries a wide range of brands with good prices
http://atlanticbeds.com/ Very good prices for Leggett & Platt adjustables.
Phoenix