Definitely do your homework before your visit if you are intending to spend significant money!
Don't forget, if it's your first visit, you have to buy a £4 annual discount card to qualify for the advertised prices.
I like looking around their stores to see the huge range of products. Unlike Decathlon, they stock well known brands from the the cheapest to some of the most expensive.
I've noticed this season, that there have been pretty steep price increases in some of the expensive items I have been considering, but a lot of the budget products have remained about the same.
What i don't like is the continual short promotions which frequenly fall on dates when I can't get there and the fluid pricing makes it difficult to track what is going on with prices.
Definitely do your homework before your visit if you are intending to spend significant money!