Do need to pay for software? I bought the deluxe online edition at Costco. I am now filing my tax. I am told that I need to pay extra fee when I submit the file online.

If you are using TurboTax Online, you are charged based on what is on your return. So, if you purchase Deluxe, but need to enter something that is not included in Deluxe, then you will need to upgrade. When you pay for your return, you will be charged the difference between Self-Employed and Deluxe.