Hi nissanman,
Gold bond latex mattresses seem to have quite a wide range of prices at different places. They are in partnership with Ecosleep and some of their line are made by Durable Products (owned by Vymac which owns Ecosleep) which makes a similar line and in some cases has identical models that often sell for less (see post #3 here). For example you can see the Gold bond Ecotouch here is identical to the Ecosleep Cassidy. You can also see here that the “Ecosleep” Gold Bond Ecotouch is a 9" talalay latex mattress selling for a very reasonable price and yet in other places or with other mattresses the pricing is much higher.
Lets hope that one of the Worley Platinum series fit what you are looking for in terms of PPP (Pressure relief, Posture and alignment, and Preferences) because their value is very good. Of course the PLB’s are also very nice even if they are more expensive (than most local factory directs at least even if they are better value than most mainstream mattresses).
I’m looking forward to seeing what you choose 
Phoenix