Cheating at Roulette is Legal in the UK

Saw this on Slashdot:

"A hidden device that appears to give an advantage to roulette players may be legal in the UK when the gambling industry is deregulated next year. The device — which consists of a small digital time recorder, a concealed computer, and a hidden earpiece — uses predictive software to determine where the ball is likely to land. It has been tested by a government lab, which found that ‘the advantage can be considerable.’ It will be up to casinos to spot people using such devices."

The Guardian article reports the device costs 1,000 punds (~$1,800 – $1,900) but really, does it matter how much it costs if you are guaranteed to win?