Hmm, no offense but I am just thinking that maybe you will used a hacked credit card to purchase those? And if that's the case, you may face some problems regarding your trades. Tell me, how would your service work? I've seen a lot of them before, one of them being purse.io. Also, you're a newbie, and as always, no one will trust a newbie on handling such trades unless the user already built some reputation around the forum.
I have already responded multiple times to the thought of using a "hacked" or stolen credit card. It will always appear as MY name as the card-holder, and I am offering full-disclosure of information to those I do business with in the spirit of integrity and transparency. I understand that I'm a newbie, but everyone has to start somewhere.
That alone isn't enough to prove your legitimacy. For all we know, you could give some fake credentials to us and buy things that we want using another name. Evidences could easily be faked nowadays, though I'm not saying that you're gonna do what I'm saying. Just pointing out the possibilities there is in case shit happens.
And with the 'extra mile' thing, I assume you're gonna give us full information about you? (Which is not an ideal approach to prove your legitimacy, it might put you in danger too.)