Google 1917 eddystone, then find the link for us military rifles then type in your serial number you can get the month and year of manufacture of the rifle action. it should be July 1918 for the serial number you provided. don't know much about price. hope this help a little
made June 1918
1918
Jan 1919
That will depend on the make of the rifle and the age of your pump rifle.
according to that serial, you have a 1915 rifle. I have seen a 1917 that was sold for 2900$.
Call Browning.
Start by posting a question here with ALL markings on the rifle. There IS no information available for some brands.
Contact the maker, Blue Book for Firearms, Proofhouse.com
To find out the age you would need the serial number of the rifle. They were made in the 1950's and 1960's. They generally price for $100 to $150.
The Stone Age - 1917 was released on: USA: 4 March 1917
Find a source with sn data for that maker and look it up.