http://onzwrui2bcou7hh4zawbhvx6rlyphj335wbwvqfi2cv3gzsi4dphpvyd.onion/faq
We calculate the market rate using live pricing, then compare it against what each exchange provides: premium = ((market - actual) / actual) × 100 A negative premium means you're getting a rate better than the market average. Positive premiums indicate a markup. In short: the lower the premium, the more favorable the swap.