Online editions can only prepare 1 Federal return per account per year. Online Premier is currently discounted at 59.99 for the Federal return (normally 79.99), and 36.99 for a State return (normally 39.99).
That assumes you will pay upfront by credit/debit card. Paying product fees out of the Federal refund has an extra 39.99 service fee.
Online Premier cannot prepare Schedule C (with expenses) for a self-employed business, and cannot prepare Schedule F (farm).
Prices are subject to increase (normally in late winter), but can be locked in by paying before the price increase.
Desktop Premier is currently 99.99 (normally 109.99), but includes 1 state program to prepare state returns.
With the desktop editions you can prepare multiple Federal returns with 5 free Federal efiles. In the desktop version there is a 19.99 state efile fee (later will increase to 24.99) for a state return. There is no state efile fee for New York state, and there is no fee to print and mail the state returns.