Only if they're in crisp, clean, uncirculated condition. If they're significantly worn, they won't be worth anything over face value.
Unless they're uncirculated they're only worth $20. You have to go back to bills dated in the 1960s before circulated $20 bills carry even a small premium, and back to the 1950 series before there's any substantial extra value.
Of course they are.
No
There were no 1990 $1 bills, but anything printed since the late 1980s is only worth face value even if it's uncirculated. There have simply been too many of them printed to be worth more. The only exception, of course, would be error notes such as foldovers, offset printing, etc.
11 ones, 2 twos
If they're modern bills, they're worth face value.
Assuming you're referring to U.S. bills, pretty much anything you find dated in the mid-1980s or later will only be worth face value if it's from circulation. Of course, nice uncirculated bills almost always command a premium of some sort regardless of date.
Guitar is worth $150.00 - $200.00
Uncirculated bills retail for about $3. Circulated bills are only worth face value.
$1.50
$500 bills were printed at the Bureau of Engraving and Printing in Washington. The denomination was discontinued in 1945. All U.S. currency was printed there till the Fort Worth printing facility was opened in the 1980s.
It is worth two dollars.