All About Pocket Knives

I need some help telling the age and value of these razors

the third reads THE JR. TORREY RAZOR CO.
WORCESTER,MASS


AND THE FOURTH ONE SAYS :PAT. U.S.A MAY 28,07
AND FOREIGN COUNTRIESAND ON THE OTHER SIDE IT READS MADE IN U.S.A

I am not the final word on razor prices, but all the ones you posted have a $5-10 value each.

The value in a razor is the name and handle material

First two razors are circa 1855-1870 - Around $15 each. Perhaps more if the edge is good
The 3rd, I would put at around 1880 - around $10
The last one looks like a Durham Duplex and is early 20th century - value, around $2