A quick search shows cost is about $1.05 a shell, plus shipping and handling. A search of the B&P website shows 3 dealers within 75 miles of me and two of those are shooting clubs unlikely to sell me any unless I shoot them at the club.

https://ammoseek.com/ammo/12-gauge/Baschieri%20%26%20Pellagri-shotgun?sl=2%201%2F2

Might be a good choice for the low volume shooter who might go through a box or two a year. I know I can't afford to shoot the B&P on anything resembling a regular basis.

I have become addicted to English hammered shotguns to the detriment of my wallet.