Mine costed about 3-5 dollars at a small petshop where i lived.
If you get one form a big name petshop, it may cost more.
In larger (10+ gallon) well furnished tanks, some people have successfully kept African Dwarf Frogs with bettas. These very small frogs grow no larger than the fish. However, great care must be taken to ensure that both the betta and the frogs are appropriately fed. Also, some bettas will bully the frogs and are not appropriate tankmates. If you do want to attempt a betta/frogs setup, make sure your frogs are African Dwarf Frogs and not African Clawed Frogs; the much larger and more aggressive African Clawed Frog will probably eat your betta.
10-14 Euros.
The cost of one Red-legged frog depends on where it is obtained. These frogs are found in nature, and if captured in nature, they are free. However, if this frog is bought from a company, then it's cost would depend on the company selling it.
its cheap
Depends on the size of the tank. a small 10 gallon is 10-20 $.
an african monkey
They are cheap in most west African countries
Check out the decoration section on this website www.bigalsonline.com and that will give you an idea.
You say "How much will it cost?" in Yoruba language of the Western African origin as "Elo lo ma na mi?".
one million us dollars
it depends on the frog.......
they are really tiny, so tiny in fact hat if yo see any you would need to separate them from the tank immediately if you have any other fish in there otherwise they will mistake them for food.