I have several Webley revolvers that I thoroughly enjoy shooting. While I would not consider selling any of them, I can at least tell you that they are fun and enjoyable firearms to shoot.
Mind you, Webley started with solid frame revolvers before going to the top break models. Of the top break models, the first is actually the Webley-Green, which is my absolute favorite of the Webleys. It's introduction date is around 1885 (mine is a later model). However, the Webley-Green revolvers can get to be rather pricey....a standard Webley-Green can be in the $900-1200 dollar range, whereas a Webley-Green target (like I have) can get up to $1700 bucks or so.......
If you want an early, but affordable Webley, then you should consider getting a Mark 1. This model was produced from about 1887 to 1894. I have a Mark 1, which is a good, solid revolver. You can sometimes find the Mark 1 in the range of $300, give or take. If you find one that has been cut for .45 ACP, you can simply load .45 Auto Rims, to duplicate loading it in the original manner.
Also, consider that the Webley Mark 1 (1887-1894) was rated only for blackpowder, whereas the British started to rate their reolvers for smokeless starting in 1894-95, with their Mark 2.
These are just a few of my thoughts on the Webley revolver.....