You pay TurboTax whether you e-file or mail the return in an envelope. The fee is not for e-filing, it is for using the software to prepare your tax return. You can file a non-resident IL return to seek a refund of the IL tax that was withheld from your pay.
https://ttlc.intuit.com/questions/2895920-why-would-i-have-to-file-a-nonresident-state-return
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