Is not that easy to start a online busines but with internet there a lot of opportunities out there. One of the most increasing market is mobile apps development. Apps are opening new markets to local businesses that were stocked and losing money instead to make big bucks.
But before your start anything you have to know what is the process to follow if you want to create a mobile app. There are many questions that will pop in your mind, so the better that you can do is to take a paper and a pen and start writting all of them. Create a list and then try to respond all the questions that you have written.
What you have to know is depending of what you ask for you will pay a big money or less. Don´t expect an app like angry birds to cost like any other...
So if you want to save money focus in your market and your target, where your potential customers are? How you can find them, what they expect from you as a business, you have a product that add value or is similar of your competitors.
How much will cost to create an app like like yours is depending of the developer, or the company that you contract to make your app, so go on google and start looking for companies, compare prices, time to get your app developed and consider other matters.