I just specced one up on Broadspeed.
A vRS with no options specified is £15910.
Selecting all the options you posted it came to £19079 OTR.
So not a brilliant deal really.
Only a good deal if you do a lot of miles and get 5+ services in the 3 year period.
Odd, I just selected a VRs TDi with the same options and got £19251, does it vary with postcode etc?
Anyway, that was not including the 3 years servicing, so I think the OP got a reasonable deal, not an excpetional deal but not a complete rip off either.