A rifle is worth what it will sell for in a free market of supply and demand. An 1895 Winchester in 30 US Caliber is a popular choice for that rifle.
Most recognized is the NRA Grading System from NIB to Poor and suggest a firearm that has had altering modifications, that are not factory, reduces the firearm to the . . "Fair Condition". . for pricing. Schwings' book, from year 2000, suggests a price of $700 for a fair condition classification. Therefore; to bring this price current, factor in a 10 year price increase, state of the economy and the demand for this time of the year.
Another consideration is most 1895's manufactured went to the Russians, during WW 1, leaving them quite rare as compared to other Winchester lever actions. This is why the prices are higher for an 1895. . . Winchester had high hopes of supplying the US Army with this 1895 Rifle in 30 US Cal., but the rifle was not well received from experiences in the Phillipines. The Army Ordinance department claimed it was clumbsy to load under fire. By the time Winchester figured out stripper clip loading, the thumbs were already pointing down, leaving Winchester with a great little rifle and no market other than domestic. So, when WW 1 came around and the Russians were desperate for rifles, Winchester cut a deal using their surplus of 1895 parts and tooling. Great deal for Winchester at the time.
I would suggest to make a professional job of finding or making some threaded plugs, similar to normal scope mount plugs, for the side-mount receiver sight holes. If the rifle has a clean appearance, with no other deficiencies, and the bore is in good shape with decent rifling and no ugly pitting, the headspace is acceptable, the action functions properly and the wood is decent; I would list it for $850.
On a further note, the 1895 Winchester has a reputation for accessive headspace. The 30 US Cal. (30-40) is not as prone as the 30 gov't 06, but is a problem with some well used rifles. A quick way to check for excessive headspace is to fire a round and check the spent primer. With excessive headspace, the primer will have backed out of the primer pocket. A little bit is acceptable, with 1895, but some get so bad the cartridge won't stand up straight when set upright on a flat surface. I would suggest taking a photo of a spent cartridge primer and include it with your listing pictures. If the headspace is not an issue it'll help you to sell it quicker and for a better price.
I have a 1895 Winchester, from 1902, in 30 US Cal that is in very good original condition and I would value it at a minium of $1200 - $1500.