"Hammerless"???? Must be Chiwaneese with descriptions like that. I bet it cost as much as my house.
I guess not, here is what I found on a google search.
TATE GUNMAKERS LLC : SHOTGUNS: SxS Dale Tate, formerly of J. Purdey & Sons, makes custom order shotguns per individual customer specifications in 10, 12, 16, 20, or 28 ga. Current SxS models include: Vintager Model w/ hammers - $8,500 MSR (add $700 for 28 or 10 ga.), Concours Model w/ hammers - $11,000 MSR, and the Tate Model w/ hammers - $18,000 MSR. Hammerless models include the Tate Model - $13,000 MSR, add $7,000 for Purdey rose and scroll engraving. Tate Gunmakers also specializes in gun repair and restoration. Prices are quoted per individual work order. Please contact the company directly for more information, including delivery time and pricing (see Trademark Index).