Or the person should charge $23 for the mod and then send the money to zektor.
Honestly, is it really worth all this grief over $23? Just pay Zektor, mills. The amount of shit you've gone through, and still going through, is well over $23.
Life will be much easier once it's paid. Sure, I don't think many will do any transactions with you in the future (at least on DP), but the amount of headache you will eliminate will be worth a ton of gold.