http://bonyg5gd2cszplkckqffzfcefig5jldgwt36gm2jqdaezlgs3nrfhjid.onion/bible/content/bible/miscellaneous-information/openbazaar/installing_on_whonix/index.html
Now you can also set the currency to your preferred one. Leave out all the other options, they only harm your OpSec when setting them. The vendors you will be buying from will know your country you are from when you send them your PGP encrypted address and an avatar is just more data that could include digital traces leading to your true identity.