I think freebies and cheapies should stay in marketplace but they have to fix relevancy!
Example: if someone has sold one 15000 L$ prefab building and other merchant has sold 1500 10L$ homes, the 10L$ one should appear way deeper than the 15000 L$. As was perfectly explained by Fornicola here http://community.secondlife.com/t5/Merchants/My-Beefs-With-SLM/m-p/717743#M301