Have you checked the prices of lumber lately?
It's pretty much insane.
I rebuilt the porch on my Mother's house last year. 30 pine deck boards were nearly $200. You don't want to know what fir would have cost. The pressure treated 2x6s and other boards added another nearly $100, and we're not talking a lot of lumber here.
The big benefit to a bench like that, whether it's Harbor Freight or not, is that it's all cut and all you have to do is assemble it. No clouds of saw dust in the air in your basement...
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.