Hi Ian,
It basically depends on the options...
A basic TLS350 without pockets or overlays costs ~1800 Euros. An explorer version (below pockets, old zipper, overlay) in stock size ~2200 Euros. If you do not fit a stock size, you add ~ 300 Euros for a made to measure. Note that the "explorer" version is only available for Europeans customers.
You may also consider a CLX450... which has exactly the same cut and mobility. Fitted with below pockets it is perfect, and more robust than the TLS350 for wreck diving. I dove both the TLS350 and the CLX450. I prefer the CLX for the bullet-proof construction. What I miss is the fact that the TLS350 dries very quickly after the dive. The CLX takes about 2 times longer.
If you don't know what to choose, buy both.
Kind regards.
Cyrille