I would say a Page-Lewis Model D in good condition is worth about $100. Here's why...
A firearms worth is directly tied to its condition and like anything else, a gun is worth whatever the buyer is willing to pay and the seller is willing to take.
I have two Page-Lewis model D rifles. The first I bought in a flea market for $10. Someone had put it in a Remington 510 stock and it didn't fit correctly at all. The bolt handle had broken off and been replaced by a bent piece steel rod. The firing pin spring had been replaced by one that was WAY too strong and some idiot had taken a file to the bolt. However, the bore was good and the metal was not pitted. It was worth $10.
The second I bought off Gunbroker for $75. The bolt handle was there but it had been brazed back on and there was a crack in the stock that needed to be glued. The bore was good and the metal was in good shape. A little TLC and it will once again be ready to take to the field. I feel it was worth the $75 but evidently no one else did as I was the only bidder at the auction. I bought it mostly to have a pattern for the stock so I can make one for the other rifle.
In my opinion, for a Page-Lewis Model D to be worth $375 it would have to be brand new in the box.
Your rifle was made between 1921-1926, when the company was sold to Stevens. It is difficult to assess value of a rifle that was made in small numbers that long ago, with no indication of condition. A Good condition specimen may bring $150 at auction, poor less, excellent much more.
Are you sure of the model number?
Small single shot falling block rifle? In excellent condition, $375-$400 or so. In lesser condition, lesser $$$.
value of a model 49 ithaca 22 caliber rifle
What is your question? I assume you mean a Model 94 single shot in .32-20 caliber.
The Springfield rifled Musket, Model 1855 had a caliber of 0.58-inch and was a single shot, muzzle-loading weapon.
For a .50 BMG rifle, $3000 and up, with $3000 being just for a basic, bolt action single shot model.
Repost with the model number, and we may be able to give you an answer.
10-100 USD or so
$50-$85, depending on condition
Model indicates a particular design by a particular maker. In the case of the Marlin/Glenfield Model 25 rifle, it is a bolt action rifle in caliber .22 Long Rifle. It has a 7 shot box type magazine. The Model 25M is in caliber .22 Magnum