Have you ever sold a car or truck only to wish you didn't?

I sure do miss my 1968 F-250 with a 460 Big Block, 4spd., 3/4 TON, 4" suspension lift, 3+" body lift sitting on 36X14.50 Super Swampers.

Go here to see a pic:
http://www.4wheelingplus.com/f250.html

How to safely jump start a dead car battery.

Why is it that this product isn't selling like ice water on a 114 degree summer day?

SAFE-T-PLUG Jumper - Booster Cables
The safest & easiest way to jump start a dead car or truck battery.
Jump starting your car or truck with SAFE-T-PLUG jumper - booster cables is as easy as 1 - 2 - 3

I've personally used these on several occasions andd they are great jumper cables. So easy to use and virtually risk free. I gave a bunch to my family and friends and they too love them.

Why then are they not selling so well?