Yes go! Great shops and good discounts and you can sometimes get an extra 10% off with a one day promo card
I know the Tourism Director personally and have been a few times and I never have enough time to visit all the shops. They are all top end designer brands and often sell sales stock that hasn't shifted from general sale periods as well as items you can find normally. If you don't want to drive it's very easy to get a train and they have free transfer coach available from station
Enjoy!