The price of a Miniature air pump can vary depending on a number of factors, such as the brand, model, features, and where you purchase it. Here are a few examples of prices for Miniature air pumps:

- **At Amazon**: You can find Miniature air pumps with prices ranging from $5 to $50 or more. 

- **At Alibaba**: There are Miniature air pumps with prices ranging from $2 to $50 or more.

 

It's important to note that prices may vary depending on the specific requirements and features of the Miniature air pump you are looking for. It's always a good idea to compare prices from different suppliers to ensure you get a good deal. Additionally, you may want to consider factors such as the pump's performance, noise level, and durability when making your purchase decision.