I had problems with the original TomTom car charger not connecting properly to the unit, and therefore failing to charge in the car (a pretty serious shortcoming as battery life is no more than 2 hours). As it charged without any problems when connected to my PC, I decided to try buying a replacement charger.
The price of this unit (currently 1p) is unbelievable, and I was sceptical about it because of that. However, the cost of P&P is relatively high, and I guess that's where they hide the real cost. Whatever - it arrived, and it works perfectly, so don't be put off by that.
Good product (although it's hardly rocket science), but I personally think it would attract more people with a realistic (low) price and a corresponding reduction in the P&P charges. The way it's marketed at th moment does a disservice to a perfectly good product.