Hello! I'm a longtime vintage clothing lover and I'm making the transition to vintage sheets. I can't believe I didn't do this long ago, they are so nice.... Anyhow, I've noticed that the vintage Wamsutta Supercale all-cotton sheets sell for a lot more than other American brands of all-cotton percale, such as Cannon or Springmaid or Stevens-Utica. I am just curious if anyone can tell me why that is, and if they are really superior. I know this is kind of off-topic but thought I'd throw it out there. Thanks!