I use Rock Auto a lot to get a part number as Whitedog76 suggested. With that part number you can do a search and find that part from other sources or find it locally..
Prices may vary with the regular "local" parts houses like NAPA, Autozone or O'Reilly's around the country just due to Location. Vintovka lives where the rest of us go play tourist and prices are high unless you want to drive a lot of miles to larger cities.
On Chassis parts I have had great luck getting the parts number off Rock Auto and finding the part on Ebay and getting Moog Chassis parts for low prices from vendors that buy out warehouse lots and figure they will make their percentage and not do a lot of work on seeing what the part fits or if it is a "rare" part. You have to know what you are buying as there is no returning the parts.
This should be the rock auto page for 53 3100 shocks.
https://www.rockauto.com/en/catalog/...+absorber,7556
If you have amazon prime they show the Monroe 5826 for 3 bucks less each shipped.
https://www.amazon.com/s/?ie=UTF8&ke...l_50da6ux6nk_e
That is why one shops around. Be real careful on part numbers on Amazon though as they all too often throw out a "almost just like" wrong parts number.