There is no exact count, but it’s safe to say not many. That was the first one I have seen come to market.

In the Parker Story, page 291, Vol. 1, there were 14 in Hammerless with Titanic barrels (187 total). None in Damascus steel (11 total)

While I have the book out, 28ga with 32" barrels :

In C (4) grade:
There were 2 with Bernard Steel (4 total)
None with Damascus - (3 total)
None with Titanic - (12 total)
Only 1 with Acme steel - (16 total)

In B (5) grade:
None with Damascus steel - (2 total)
None with Titanic steel - (4 total)
Total of 4 with Acme steel - (13 total)

In A (6) grade:
None with Damascus steel - (1 total)
Total of 5 with Acme steel - (11 total)

In AA (7) grade:
Total of 1 with Whitworth steel - (5 total)

In A1S (8) grade:
Total of 3 with either Peerless, Whitworth or Titanic steel - (7 total)

If the table in TPS is to believed, 14 of the 187 28ga. D grades were 32"

I thought published prices included buyers fee. No?

Those 3 prices stated above included the premium.