It depends on the year and the composition of the set.
You can browse the catalog, below.
July 9, 2009 The Uncirculated US Mint set is valued at about $15. The 2005 US Mint Proof set is valued at about $25. The 2005 US Mint Proof set is valued at about $42.
July 9, 2009 The Uncirculated US Mint set is valued at about $15. The 2005 US Mint Proof set is valued at about $25. The 2005 US Mint Proof set is valued at about $42.
With original Mint packaging retail is $30.00 for a Silver Proof Set
8 to 12 dollars
A 1999 US Mint 50 State Quarters Proof Set is worth about five US dollars. However, a 1999-2008 US Mint 50 State Quarters Proof Set is worth about 100 US dollars.
Current value of the 2003 10 piece Proof set is $10.00. Issue price was $19.95.
The 2006s 10 coin proof set has a retail value of $31.00 issue price was $16.95
The U.S. Mint does not make "proof mint sets" of any year. The two types of sets have very different coins in them. A 1980 PROOF set has a current value of $5.00 and was issued for $10.00. A MINT set has a value of $8.00 and was issued for $9.00.
The 5 coin proof set has a value of $6, the 10 coin set has a value of $15 and the 10 coin silver set has a value of $48.
They are valued from about $5 to $7-$8
A 1940 US proof set is rather valuable. As of 02/2015 an estimated retail price is around $1500.
Current retail value is $10.00 issue price was $7.00