How much are old vinyl records worth from the 30 and 4o 50?

It depends on the condition of the record, and if it's an LP, the cover. As well, it depends on the collectability of the record itself. If you have a question about a particular record, it would be easier to answer. Check out a used record store and ask them what they would pay for "album x". Most 2d hand stores or antique stores are offering vinyl LP's at $1.00 and they aren't selling very fast.