With desktop software, even though the software includes the program to prepare a state return, it is an extra fee to e-file the state return. You can avoid that state e-file fee by printing and mailing the state return.
(And why would you expect TurboTax to give you a full refund for a purchase you made at Costco?)
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**