To activate the coupon click "Buy 1, get 40% off" just below the price. Then hit "Redeem." Once you go to check out the discounted price will show up there.
It seems as though all of Audio Pro's products are on sale[https], but I think this is the best deal. I guess it also depends what you're looking for. This is the only bluetooth speaker that they make as far as I know that has a battery.
I originally purchased one of these for around $210 and thought it was great for that price. The battery life is incredible and the sound can actually be called hi-fi. I recommend reading some of the reviews if you're in doubt: