The link leads one to conclude that there could be roughly a half million different stamps.
Without knowing what stamps you are refering to, it is impossible to offer a value. Stamps are issued from virtually every country in the world, as well each country issues many different stamps each year.
22 stamps
That would depend on where in the world you were posting from and what denomination of stamps you were using.
Beyond counting
Nine.
If you have four 25 stamps and three 30 stamps altogether it would by worth 190.
19 ways
As the name implies, it would have eight stamps. It can be 4 by 2 or 2 by 4, usually depending on the stamps, particularly if there are four different designs on the same sheet.
Hundreds of stamps are issued each year around the world. Each country will issue different stamps throughout the year.
There have been over 4,500 insect stamps issued throughout the world. These stamps show over 1,800 types of insects and are collectible.
There are many different groupings of stamps: An album A stamp collection A stamp exhibit A sheet of stamps - a complete sheet as issued by the post office A pane of stamps - A booklet page A block of stamps - multiples that are still attached A pair of stamps - Two connected, often used with coil stamps A strip of stamps - More than two connected coil stamps
They are called catalogs. There are a number of them available from many different companies. In the English speaking world the Scott's Postage Stamp Catalog and the Stanley Gibbons are the most common. They can help you classify and identify stamps and provide a rough value.