Scott #2181 Mint it would cost you about 45 cents to buy one. There are also some varieties that are worth a bit more. These are valued at 20 cents used, the minimum amount required to catalog and stock the stamps. Unused will always be worth at least their face value, so they are worth at least $23. Special cancellations and different values are likely to be worth more. Consult a postage stamp catalog, usually available at your local library for exact identification and catalog values.
Scott #2181
A used copy can be purchased for 20 cents, a mint copy can be purchased for $1.10.
If you sold the mint copy, you might be able to get a quarter for it, but most dealers don't want to deal with single copies of relatively inexpensive items.
That would be Scott number US 2181. It can be purchased for 95 cents mint and 20 cents in used condition.
i have a book of Australian stamps from 2006 and it says the mini sheet is worth $2.50
That would be Scott number US 1745-8. A full sheet of these stamps has a catalog value of $21.00.
$57.50 (Brookman Catalog)
Scott #US3226 You can purchase a mint copy for about $1.75. A sheet of 20 stamps will cost you $35, you might be able to sell a sheet for about $10 if you can find a dealer that wants them.
That would be Scott number US 2496. A full sheet of these stamps has a catalog value of $44.10.
That would be Scott Number US 1755. A full sheet of these stamps has a catalog value of $40.00.
That would be Scott Number US 3561-3610. A complete sheet has a catalog value of $36.75
That would be Scott number US 1124. A full sheet of these stamps has a catalog value of $11.00.
About £20.00
what is the value of a sheet of c m Russell stamps 1963
It will depend on the specific stamp issue. It could be minimal, worth 15 cents postage for each stamp. They may be 50 or 100 stamps to a sheet. There are some very early 15 cent stamps that could be worth many dollars each. Consult a good stamp catalog to identify the stamp and its value.
Scott Number 2982 - 2992 A mint block of 20 of these is valued at $12. So your sheet is probably worth in the neighborhood of $30.