This does appear to be a very nicely preserved specimen of a Model 1899 Hand Ejector; I don't believe S&W used the "M&P" label that early.

I think you have it dated about right, maybe a year or two later. The reflective background of the photos (looks like a shop counter, so probably not your choice) creates some odd reflections, but to me the finish looks all original and in uncommonly good shape for this early model.

Others may have more current info on the market value for these, but from what I can see of the gun, the price on the label is not unreasonable.