I picked up 7 silver proof sets - 2 2001, 3 2002, 2 2003 - for $185. Is this a good price? I'm planning on keeping one of each year for my collection and selling the extras. I know the 2001 set used to have some premium for the
Sacagawea dollar but it seems to have dropped off recently quite a bit. Whats a good price to take for the rest of the sets? Thanks.