The special buy 6-piece set is available for sale again. Not as good as the black friday deal, but still not a bad price for these.
Included sizes: 3/8", 1/2", 5/8", 3/4", 7/8", 1"
https://www.homedepot.c
Note: These spade bits have a threaded point to help pull the bit through the wood. They’re really only useful if you want a through hole. If you want to control the depth then you’ll want to drill get the regular chisel-point bits. However, I have an 18" version of the 3/8" and I was able to pull it out of 6×6 landscaping timbers mid-way through with a bit of effort. When you want a through hole, these things are great.
I’ve only used these in soft woods, so I don’t know if they are any good for hard woods. Anyone have experience with this?