$400 out here, and they're not here. Buy it and enjoy it, they are great guns, low recoil, and tough as nails. Ammo is available from Fiocchi via Grafs and not expensive. Save your brass.
I have two of these, one .455, the other .45 ACP. I'll retrofit the latter to the original cartridge when I can find a cylinder.
The Webley is an iconic firearm, you won't be sorry.