How much is my record worth?

I have an Elton John greatest hits record in mint condition. It was released in 1980. The tracks are : side 1; "Your Song", "Daniel" " Cat", "Goodbye Yellow Brick Road", "Saturday Night's Alright for Fighting". And side 2; "Rocket Man", "Bennie and the Jets", "Don't Let the Sun Go Down on Me", "Border Song", "Crocodile Rock". I was told this record is rare and is worth alot so I want to know how much exactly. I've looked online but I can find any info, so if you can help it would be greatly appreciated.