I paid $400 for mine. It's a 39a Golden. Never seen another for sale less than $600. Haven't checked lately but yes they do bring a premium. I bought mine in a LGS and I did not hesitate on buying it.
I’ve bought two in the last couple years. One I paid $300 for(1957 vintage) the other I paid $400 for(1964 vintage) I’ve since sold the 64 vintage for $450. The 57 vintage has been claimed by my daughter.
I still see them for sale from $500 on up depending on condition.