No, do NOT buy that PSU. Thermaltake Smart series and TR2 units are bad news. Stick to models sold under the names of Seasonic, Super Flower, some Antec models (Not all), some Cooler Master models (Definitely not all, in fact, few), XFX, Rosewill (Capstone series only), or in this particular case, since they seem to be available in your area, although I normally advise AGAINST getting one, the Corsair CX, CS or RM series units might be your only option for an even half good unit. And I say half good with a large measure of "understand these are NOT good units", but are much better than what you have now.
For the most part, anything sold by Corsair, Thermaltake and Cooler Master is junk unless it's one of their expensive models. Avoid Thermaltake altogether when it comes to power supplies.