TT11 has both those blades for just a few bucks more than prott.vip. And since they are an authorized DHS dealer, you know you would not be getting a fake, and you would receive it sooner. Also, the price difference is less significant when you factor in shipping costs. Anyway, something to consider.
I just have my doubts about some of what they are selling, not ordinary blades like the ones the OP wants, but their "special" blades.