Not high and not very. Two dollar bills are still at least theoretically in circulation, though they're not very popular; an uncut sheet is more a curiosity than anything else.
Like the value of anything, it is only worth what someone else will pay for it!
If you had a sheet of uncut two dollar bills, they would be worth far more than just two bills. Depending on their condition, the bills together would fetch between $2 and $10.
Please check again and post a new, separate question. There are no US $1 bills dated 1984.
Not particularly. Yes, the might be worth around $2.25 to a serious collector, but good luck selling them. Two dollar bills are easily available in uncirculated condition and even uncut sheets. Really, unless there is something unusual about the $2 bill, it isn't worth much more than $2 even in pristine condition. Of course, I'm talking about the $2 bills from the 1970s onwards, not the "red seal" notes which are much more valuable in uncirculated condition and would command a premium.
Not all uncut diamonds are 'cheap'. Although 80% of all diamonds mined are industrial diamonds, which you can purchase by the multi-pound bag full for not a lot of money, gem-quality diamonds are relatively expensive even before they are cut. You can review the site, below, to price a sampling of uncut, gem-quality diamonds. Be aware, however, that cutting a raw stone can reduce its carat weight by about 60%. Once cut, the diamond is priced according to its cut, carat weight, clarity and colour.
Yes, although an uncut sheet may be worth more than the individual bills.
moneyfactory.gov
8
roughly $750.00
Eight dollars.
16 dollars
About 26 wide by 22 high
$40.00 There are too many uncut sheets out there to be worth any more than face value.
40.00
$32 would be the value. You can buy bills in sheets through the Bureau of Engraving and Printing at moneyfactory.com
Four genuine bills on a sheet will NOT have the same exact serial number.
Please check your bills again and post a new, separate question. No US $1 bills were dated 1987.