do you think it would be a good idea to get a credit/debit machine for my business?

by credit card? Yes, taking credit cards is usually a good idea. Simply do the math - figure out what you expect your total effective rate to be for accepting credit cards and then deduce how many jobs that you would have to get that you wouldn't have gotten if you hadn't taken credit cards... profit and a very high net effective credit card processing rate of 3%. Pop in your own numbers to make... have pays with a credit card and your rate is as high as 3%, you will still only need to gain one