what are the sale rules here?

[cohesive]

You cannot sell items that are posted on other sites to sell? Is that the rule?

Sie können keine Gegenstände verkaufen, die auf anderen Seiten gepostet werden zu verkaufen? Ist das die Regel?

Hubert

[Hans]

Almost right, but not completely.
It is not allowed to offer items simutaneously at market places like ebay, etc.
It is not allowed to offer items simutaneously at other forums with different prices.
You MUST specify a price.
It is not allowed to offer items against European law.

Greetz
Hans