Bass Chopz Accelerator (BCA) is not a DVD product. It is a exercise book with 2 CDs containing the exercises played at 3 speeds: 70 bpm, 120 bpm, 180 bpm. The exercises were developed by looking at etudes for other string instruments.
I have been using BCA since it came out and it has helped me tremendously in 2 areas: dexterity and turnarounds. Each exercise forces you to do string skipping, huge jumps from one end of the fretboard to the other and fretting with your whole hand. To advance, you must master each exercise at each tempo. Just going from 70 bpm to 120 bpm made me realize that "clean speed" is critical: if you can't play an exercise cleanly for several minutes, you are not ready to increase the tempo. So just practicing the drills until you can perform them without error is very beneficial. I also like how each exercise brings you back to the top, so you get in the habit of working the turnaround which leads to creating variations that are pleasing to the ear.
As is Alex' custom, he lays on the hyperbole a bit thick. The first 30 pages could have been culled down to 10 pages, at most. Also, all the pages are printed on one side alone. IMO, if he offered Bass Chopz Accelerator as a downloaded ebook with practice songs included, it would be a perfect package. However, I'm glad I got it anyway, especially since I purchased "Contemporary Gospel Bass Player". I think my favorite activity is to play the basslines using different backing tracks. taking a song that was written for 3/4 time and adapting it to 4/4 or 6/8 or a shuffle is not only challenging, but it opens up my creativity which leads to new bass licks.
Hope that helped somewhat.