I know what you mean. I think one of the hardest things in
PUA is demonstrating higher value without bragging. The only way you can do it is by being slightly dishonest and have a wing come over and sing your praises while you are in the bathroom, or by having certain things lying around your flat that represent your higher value (but by that time, if you have her in your flat already, it's probably not necessary).
In my case, however, the business cards are not so bad. I teach English as a foreign language and live in Sicily, where they really need lessons. They always ask me what I do and I explain that I run my own business teaching English and translating. When they look interested, THEN I give them a card. I have them in two colours, so I ask them which one they prefer and that's the one they keep. Actually, just giving out my cards, I have been added on facebook, quite a lot.
I thought as a direct approach, I could just hand the card to a girl. And when she starts reading out the stuff about lessons, I could just say. "I didn't give it you because I want to teach you English. I gave it to you because I'd like to get to know you." Or if she looks dirty and I want to use "The Philth" approach I could just tell her that I gave it her because, "I want to fuck her until she can't walk straight." Lol