Good to know! 270 Win was a more common chambering.Actually in some calibers such as 7x57, or 257 Roberts, 6.5X55 are bringing in big bucks according to condition. I think $600.00 is really on the low side.
I've owned two in 7x57 in past years. When they were nothing special, price-wise. Still own one, but it's now chambered 280 RCBS Imp.