Consider what you want to do with the gun.
First- the Sharps and the Marlin mentioned are two different ballgames. They're not really made for the same function or general uses.
I have my Shiloh, a Remington rollingblock, and a Marlin Guide Gun.
The Shiloh is for admiration, nostalgia, occasional potting away at things with my own loads. It's too heavy to carry far on foot, not practical FOR ME as a hunter for that reason. I also don't use it for long range competition, so I have not invested $500-$1000 in the right sights to do that.
The Remington is light enough to carry, I have it zeroed for 405-grain "traditional" loads. Not much of a thumper at all. Another admiration & nostalgia piece good for fun or hunting.
The Marlin is heavy bear artillery, with heavy Garrett loads. It's short enough & light enough to carry on foot, very huntable, and with those loads it IS a thumper.
That one's all business, I don't shoot it recreationally.
So, if you're looking at the Shilohs for nostalgia, historicity, quality, and as a fun gun, just decide which one you want the most.
If you want to go long range, choose the one with tang sights already on it.
If you want to go pretty, choose the pretty one.
Be warned that the heavy barrels make a very heavy rifle, and one you won't tote much on the ground or hold up well off-hand in longer shooting sessions.
Decide what your intended use would be, decide which rifle would meet it best, and look at the buttplates on both. A flat shotgun-style will be easier on your shoulder (trust me on that), a crescent looks more traditional but requires a different shoulder/arm position for best results. I was more interested in comfort, ordered the shotgun style on mine.
The tang sights may not be an issue, unless you plan to shoot farther than about 150 yards. Regular buckhorns can get you that far.
The rifles are very fine products, I've owned two & worked with a third that I wish I'd kept. In retrospect, I wish I'd gone with a lighter barrel on the one I have here. The .45-70 caliber is easy to load for to different levels of performance.
Just look beyond the pretty wood & colors and evaluate the physical features of the guns to correlate how you'd be shooting them. Buttplate, sights, weight, etc.
Something else to consider is that the "plainest" grade of wood, straight-grained, will be the strongest. The fancier grades with more curl & figure are not as strong. That does NOT mean they'll break with normal use, just an advisory on selecting wood, and Shiloh used to include that in their selection process as part of ordering info. Dunno if they still do.
Otherwise, both prices are well in line with rifles as you describe them.
Denis