There are several realistic revenue sources that can be realized if you have enough users in your café.
Selling food
I cant tell you much about selling food in Internet Cafes. I didn't sell much food. I had pre-packaged food such as danishes, candy bars, and potato chips. I also sold water and soda. An interesting observation was that Coca Cola and water were the two main sellers. I could stock the fridge with 30 kinds of drinks. At the end of the day, it was the Cola and Water sold. I just sell Water and Coke now. If you have a long term lease, I would suggest opening a food portion to your internet café. Be sure to go to your local health department to find out all the rules in setting up your café. Also, be sure to look on eBay for your kitchen equipment. You can usually find restaurant equipment for 20% of the price on eBay.
Where to buy cheap PCs
We advise business owners to purchase their PC's online. There are a great line of refurbished IBM PC's on eBay. Its important that once you start out, you purchase the same PC's, if possible. You'll understand why shortly.
How to limit technical work
In the olden days, when we had PC problems we used to remove the PC, reinstall windows and all the software. This would take about 1-2 weeks before the PC was replaced. It was very annoying, it would takes hours of brainless work. Then we came up with the idea of removable hard drives. With this system, you must have all the same PC's. You have a master copy of the hard drives. Then you use a program called True Image (www.trueimage.com) and clone your master hard drive. The cloning takes about 4 minutes. In 4 minutes you have a new drive with all the settings and no viruses. Your PC's should also have a removable hard drive slot, you can purchase these online. You should make 5 extra clones of hard drives. If a computer is acting up, you simply take your key, open the hard drive slot, remove the old hard drive, and replace it with the new clone. That's all. Your up and running. Once the system is set-up, maintaining a network of 10 or 1000 PC's is effortless.