The last day to e-file a new return was October 15th.  With the Online version you are paying for the price of the return, there is no charge to e-file a return.  The charge is the same whether you e-file or mail in your return.

Since you already paid for the returns you cannot delete your State return.

Thanks. I was actually able to file my federal even with the deadline passed. I created a second account to bypass the main issue which was with one of the centers not accepting e-filing for the year. The rep I spoke with online when I explained the scenario refunded me a portion of what I paid for since I could not efile for delaware state but was able to for pennsylvania and file federal.