Latex mattress and base under £500, too good to be true?

Hello, we have been looking to replace our present, life expired Bed with a new one. Searching for the ideal product has been, to say the least, quite a minefield ! Your site has thankfully answered many of our questions, and many we hadn't even considered.
I have managed to obtain some information on the Bed in question, and would invite your comments on its component parts and construction, as i need some clear expert advice !
The knit contains 20% bamboo in the yarn, which is brilliant for absorbing moisture and killing odours.
The top layer is 30mm of Natural Latex.
The second layer is 1000g polyester pads on both side of the spring unit.
The third layer is a 900g polyester strong durable pad on both sides.
Finally the heart of the mattress is 1000 pocket, framed and centre framed unit.
The mattress is approx 28cm deep, and with its Divan base costs in the region of £550.00.
Many Thanks
Andrew T