Based on recent experience it is cheaper but not overall.
In other words while the hirer rates are less and the availability of high performance twins and singles better for training you need to consider the complete package, including of course the cost of getting and staying there. Moreover the difference in cost of typical training aircraft is more marginal.
In my opinion go if you want a holiday, or some better weather, so the cost of the holiday is incidental, but dont bother if it is purely to save money.
The flying is great, the infra structure still puts us and the rest of Europe to shame but you will also find that as much that can be different is, so flying in the UK will seem different at least for the first few trips even if the laws of physics havent changed much this side of the pump - well except between gallons (imperial and US, even if we both like to call them simply gallons!).