Experimental Rinse Sacagawea Dollar

Any current market price or pop data available on the 2000P or 2006D experimental rinse Sacagawea dollars known to date? I see lots of 2001P experimentals out there but cannot find out much about the 2000P and 2006D cept that they are claimed to be very rare. Did see an ICG graded ms67 2001P for sale around 7-800.00. Claim is only a handful of 2000P and 2-2006D known to date. Who claims to have them? Pcgs makes reference to these coins. Like them or not there seems to be an established market out there. Value or Pop guess on the rare ones? Comments? thanx....G