The "H&R Block Tax Software Premium 2017 + Refund Bonus Offer [Mac Download]" ( Premium and State edition) is currently on sale at Amazon for just $29.99
This is likely to be the lowest price this year.
There are PC versions and other (lower) levels of this software also available. Some of which seem to be on sale but not others. I suggest you poke around on Amazon.
I've been using the H&R Block Tax Software for years and I find it easy to use and very helpful.