FFLMike, buying this gun may or may not be a good idea depending on the reason you want it. If you just want a specimen of an early hand ejector S&W because they are cool, that's fine. If you are looking for a cheap home defense or under-counter gun at a business, I'm not sure this is it. At no time should you ever shoot +P ammo in a gun this old, and you might even want to restrict yourself to low pressure handloads or match wadcutter ammo if you are going to shoot it at all. And under any circumstances you would want to give the gun a complete action inspection to make sure there are no problems with timing, push-off, cylinder looseness, or the other ills that old guns can be heir to.
I'm less hopeful about the availability of ejector rod tips for the Model of 1899 than Alan is, but I could be wrong. There are four or five leading old-parts dealers; if you strike out with them, you have pretty much struck out, period.
Looks like there might be some rust under those pearls. I'd worry about that.
I don't have an 1899, would like to have one someday, but I think I might pass on this one if someone set it in front of me. Excuse me if I sound negative; I am just trying to be cautious on your behalf.