Here are some cages that i recommend getting:

 

The Hamster Heaven:

The hamster heaven is a cage with many features such as tunnels, slippery dips, hidey huts and bridges. The name is very suitable because it does look like hamster heaven to me! Now i would recommend this cage for dwarfs.

Size: 80cm x 50cm x 50cm

Rating: 5 stars

 

Zoozone 2:

The zoozone 2 is actually made for guinea pigs but it is way too small for them, but perfect sized for hamsters. The floor space is massive and enough room for 1 hamster. But you will have to mesh the bars at the top since they are big enough for dwarfs to escape. I recommend this cage for dwarfs.

Size:

Rating: 4 1/2 stars

 

Fish tanks:

This is one of the most common types of cages that hamster owners use for their hamsters. They do not need to wory about the hamster escaping or air ventalation because all you need to do is mesh the top. You could find fish tanks everywhere in different sizes all over the market. I recommend this tank for all species of hamsters.

Size: 20-30 gallon tank

Rating: 5 stars