One gallon of the DIY product costs around $100, which they say will do one full-size pick-up bed. Most ArmorThane bedliner applicators use around 5 gallons of product to spray a full-size pick-up bed which costs anywhere from $450-525. So just by the amount of product being utilized, you are getting ripped off with the DIY stuff.  Most people realize after they have already started applying their DIY stuff, that they will soon run out and have to make a quick run to the store and hope there is enough stock. Otherwise, you could end up with a rough-looking uneven bedliner. This doesn’t take into account your time and labor. Be aware that what you save in dollars over a professionally applied product may cost you in time spent doing the job and the end result may be a poor-looking job that provides limited protection.

Let’s also not forget the fact that the DIY product is absolutely inferior to ArmorThane. It’s just like skipping a professional paint job for a spray can and hoping for the best.