For the time being, I only offer PayPal (automatic) and bank transfer (after an email contact). I intend to add something simple once I find an offer with fees applicable not to a mini, but rather a micro shop such as mine.
Within 36 hours after receiving payment and DNS data of the hosting of the buyer, I shall set the new DNS for the domain.
Within 14 days (under Polish law, the legal term for you to cancel the transaction), I shall transfer the domain data and provide you with the authinfo code.
Contact me via email or leave a comment under the shop offer.