I'll guess that it is an early 1899F (straight stock profile not perchbelly), perhaps with an early 1899H barrel. That front sight is how they looked on the early H's. Perhaps too they were using up leftover early barrels on somewhat later rifles. All in all $400 is a darned good price. Too bad about the add-on costs driving it up so high. I would've jumped on it like a duck on a June bug.
I hope the bore is nice. Lever looks like the typically oxidized levers on so many from that era whose case colors have faded away.
But the early F started in 1920 and the SN on this one would be 1912 or 1913.
Far too late of a number for that time period, no?
SN on this rifle is 1391xx. Murrey shows 1912 ended around 131,000, 1913 around 146,500, 1919 ended around 212,000.
