Green/Black SUB (noob question)

[diveganesh]

hi,

first post, please be gentle.

i have a big birthday coming up and have been asked what watch i'd like. so many to choose from (probably the reason why i don't have a proper watch).

anyway, i really like the submariner with the green bezel and black dial but can't seem to find it on the rolex website (they have a green dial and green bezel though) - wondering if that is a discontinued model and if it is any suggestions on how to go about locating one?

also, if i don't find one, i might just get the black dial+bezel sub and i've seen photos of watches that with an aftermarket all-black DLC finish - do you have opinions on the life of the coating (i'm guessing enthusiasts and purists may frown on this)? would like to hear from anyone who might have actually gotten this done. i'm not interested in resale value, expect i will keep this watch.

third question - having not bought a nice watch before, best places to buy a rolex at a good price? apologies if this is not kosher to ask here (and if so please disregard).

many thanks.