Why would you want to pay later for such a small order? I can see doing it if you were ordering $500+ worth of parts and being reimbursed for them, but $20-$30 will buy enough caps to re-cap several Macs, or you can just buy a kit from trag for what, 10 bucks? Seems like it makes more sense to just order when you have the money and not have the debt hanging over you.