If I want to say the price of something I sold or I bought, e.g.:
Ich kaufte das Kleid mit zwanzig Euro an.
Ich verkaufte das Kleid mit dreizehn Euro.
Is "mit" the correspondent preposition to use in such case with these two verbs?
You're looking for "für" (I bought the dress in exchange for 20€).
I agree with the existent answer, but partially. Actually that is region dependent. To be fair with Austria and Switzerland
depending where you are. Same case for verkaufen.