How much longer will the 2007 uncirculated mint sets be on sale? Does the mint just stop them without notice? Will they be available for sale well into 2008?
It will be on sale until they sell out. It cost money to 'destroy' leftover mint sets, they would rather just sell them.
The 2006 uncirculated sets were available until sometime around October of 2007 when the 2007 set was released. I dont know if this is normal, but it would seem to indicate that the 2007 will be on sale for a few more months at the least.