Welcome to this forum!
I am afraid yours is not a very good question. If you can stomach cheapo beer or cheapo wine or pizzas - I enjoy them all
! - do go for them.
In flight training, as in many subjects, the cheapest is rarely the best. And flight training is, or should be, a once-in-a-lifetime enterprise, so price should not be your prime decision factor.
That said: some clubs in France (and they are real clubs, contrary to some UK "clubs" that are commercial organisations in thin disguise) offer quite attractive rates, and a few even have English speaking instructors. You could consider making your PPL a summer holiday project, perhaps - even if France is no longer the nice country that it used to be.
As pointed out above by @DAR - who does know what he is talking about! - it is much more important to find a school that is not inconveniently distant, and has good availability of airfield and planes and instructors. And work hard for yourself, at home or wherever, outside lesson time. That will allow you to gain your PPL as quickly as possible, and there's a great money saver.