Well the main advantage to me for saving money when taking the PPL, be it in the UK or abroad is if you have a couple of grand left over you can put it towards something a lot more worthwhile than your PPL such as another rating or even a share in an aircraft!
Cost me about £4500 for 62.5hrs in the US including two lots of flights, accom, food, beer, etc. so that would be £3k to spend elsewhere in my case.