The 1900 Morgan dollar is a high mintage common date coin, average retail values are $45.00-$75.00 for typical Mint State coins in MS-60 to MS-63.
In MS60 Grade uncirculated, a 1880 S Morgan Silver Dollar is worth about $52. In MS65 Brilliant Uncirculated, it is worth over $330.
Currently a 1880 S Morgan silver dollar in MS65 uncirculated condition is worth $156.
List for this coin in MS-63 is $50.00.
$60 to $300 depending on grade of uncirculated, but most likely around $150.
Currently as of April 2012 a 1880 Morgan silver dollar in MS63 uncirculated condition is worth around 63 dollars.
This is a common date/mint Morgan dollar, retail for circulated coins is $17.00-$26.00 depending on grade. Uncirculated start at $35.00
1921 is by far the most common date for Morgan silver dollars. With silver prices dropping at the moment (17 April 2013), one is worth $18-$20.
A common high mintage Morgan Dollar. Circulated coins retail at $17.00-$35.00 and uncirculated coins at $40.00-$50.00
Circulated coins are $15.00 to $40.00 & uncirculated are $75.00 an up
A 1921 Morgan dollar is worth about $25.00
As of 10/2008 an 1896 Morgan/Liberty Head Silver Dollar minted in Philadelphia in fine condition is worth $18.00, uncirculated is worth $34.00, proof is worth $1,300.00 It is a fairly common date - it would be worth $17 - $22 in circulated condition, and perhaps $35 - $70 in uncirculated condition (depending on just how uncirculated it was - you'd need a dealer or other specialist to judge the condition for you).
Morgan dollars from 1921 are the most common Morgan dollar and even in uncirculated condition they don't command much of a premium over melt. They are worth about $30-35 depending on condition and silver price if circulated and perhaps $40 if completely uncirculated.