EV Mod all model/years?

OK, first I'm no rocket scientist on the Prius, but I'd like to solicit some input on this EV Mod currently being "pimped" on fleabay. Starting price $39.95...Link below...
It reads: SAVE SOME REAL GAS AND CASH-ARE YOU SICK OF YOUR PRIUS PETROL MOTOR RUNNING WHEN YOU KNOW ITS NOT NEEDED-FIX THAT FOR GOOD-WITHOUT WRECKING YOUR PRIUS BATTERY BY FITTING A PRIUS LIBERATOR UNIT works in all models 2008-1997worldwide NW20-NW11-NW10 Works AUTOMATICALLY -EASY IDIOTS installation instructions TAKES 10 MINUTES MAX Using only pliers (LEFTHAND DRIVE) and Philips screwdriver (RIGHTHAND DRIVE) Adding this simple unit, ,KEEPS YOUR BATTERY WITHIN ITS TOYOTA DESIGN LIMITS AUTOMATICALLY,(unlike the EV button installed in Japan,for moving cars from one side of the road to the other, which can be misused on a flat battery on some earlier models)IT delays your motor start-up, so it only runs when needed while preserving the motor high temp safety features, although the setting is reduced. Anyone with a cell-phone or portable phone knows the more you charge their batteries without allowing them to nearly discharge the less less capacity from the battery you get over time.THE Same with your PRIUS. My NW11 PRIUS 2000 had settled to a maximum fuel economy of around 18.9km/ltr , 46miles per US gallon(4ltrs)with 107,000Km on the clock doing a repetitive work run of 42km round trip on rolling paved open hilly roads. I got sick of my petrol motor starting and running for ages on start-up or when it was obvious the battery was charged, boiling the radiator water when my car was at crawling speed to the end of the road or car parks or at 50Km/30Mph when it was not needed to start yet, with the battery fully charged, or when going down a hill with my foot off the accelerator. It really hacked me off. SO I DID THIS MOD and got initially 19.6/20.4/21.3 and now steady around 22.4-22.6k/litre after 4 tank fills. Winter gas economy fade is reduced as well THAT’S 18.9to 22.4km a BIG 3.5k/ltr./18.5% FREE MILES 4 me each tank fill YOUR FUEL ECONOMY will rise with each tank re-fill as Increased Battery Capacity and Performance shows, as its cycled further thru its programmed charging range (80% down to 40%) and that will enable it to stay in battery mode longer around town, due to motor kicking in only when demanded. I’m Getting 3km (around 2 miles) on the flat when babying it. As a bonus your PRIUS will become gradually peppier as the battery is able to give a stronger boost as you accelerate before it fades. NW10/11 ECU LEFT-HAND DRIVE(America) BEHIND GLOVE BOX. you only have to release two plastic securing pegs on the left and right to allow removal for easy access. RIGHT HAND DRIVE –remove two Philip screws at bottom of dash ankle height, one on each side under the steering wheel, then pull plastic dash towards you-it is clipped in. ECU is in the same physical spot in both cars.Push the two pins in the back of a plug with a pair of pliers and its done.

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Just like to get some input on this supposed Mod, and maybe set the record straight on it before someone gets "taken"...

eBay Motors: Prius AUTOMATIC EV MODE-ALL MODELS/YEARS NW10-NW11-NW20 (item 200232536555 end time Jun-24-08 11:58:40 PDT)

 

Thanks...I didn't seem to find anything when I did a thread search...appreciate it!