TT models are always 'not popular' as compared to SS, probably due to the gold that people feels it looks 'old'. I do prefer TT as it adds 'value' due to the gold on bracelet, crown and bezel esp. gold price is keep going up. However in luxury watch, somehow collectors see it differently as the price of preowned will shoot up if demand is high. I also noticed that somehow only SS models are in huge demand as compared to TT, YG or WG. Thus since less people buy those gold watches so the supply is also low. In any case, as the demand is low, you should be able to get it direct from AD. And if I am not wrong, the discounts for 116613 & 116713 are not too bad. It used to be very good but the recent price adjustments and strict restrictions from Rolex seem to reduce the discounts. As a result, you probably may pay a bit more for a brand new piece from AD.