I got my TLE (non-stainless) for $799. The major differences between the TLE and the Custom are the sights and front/back strap checkering. The TLE gives you the option of night sights vs. adjustable target sights, both are an upgrade on the Custom. The front/back strap checkering is standard on the TLE and made a BIG difference when I handled and shot the two guns. If you haven't done so, handle one of the models with this added checkering. With those two differences, and the cost to bring a custom up to the TLE specs, I made the decision to go with the TLE. The Stainless finish is usually a $60 upcharge over the standard black. Either way you go, these are awesome guns.
As for pricing, there is a non-stainless, Custom II on Gunbroker.com with no reserve, for $638. If you add the typical $60 upcharge for the stainless, it would be about $700. Your deal of $739 is OK but not great. IMHO.