There is cheaper than brisket. Use pork shoulder.
Cook a shoulder low n slow like usual to 170*IT (go to 170, do not shortcut once it stalls at say 150, I tried a number of times with poor results.)
Cube up to your preferred size and into a foil lasagna pan. some like 2" cubes, I like smaller 1/2" to 1" max cubes.
little bit of sauce to coat (not heavy just coat)
Add rub to get a good coating.
little bit more sauce to coat, then rub again. (You want rub and sauce to make them well coated and sticky, but do not want sauce bath in the pan.)
Throw in smoker @ 225* for a few hours. I usually check after 1hr, then again @ 2hr mark and then start checking every 15-30min. All depends on how they are progressing. When you want to hide in garage with the pan, they are done.