Signese

MasterCard?

Yeah.

But what is it actually talking about?

There's a price for almost everything, but this particular thing can make your dream come ture, which is priceless. Details.

Having this blog to keep me entertained: priceless ;)

MasterCard

So the 武器库 in question is the shoe (or any luxury good) shop, right? And by 打败ing it you're buying its products?

Nope, it's her armory of shoes that she can use to defeat (outshine, outdress) other women. That's my take on it, anyway. I'd assumed this was her shoe wardrobe rather than a shop.

Ah yes that makes a lot more sense.