First of all, I love to create business cards! Second of all, I'm thankfully experienced in doing so.
I'd love to be the person you hire for this job, as as soon as I saw your proposal I immediately envisioned it in my head. I believe I am the person for this project, and I have already worked out the cost of printing 250 one-sided or double-sided business cards and the cost of shipping them, and that is the reason for my higher price.
I would work collaboratively with you on this project and happily tweak any design features to your liking.
Thank you! Feel free to contact me, I'm constantly able to be reached.