Delinquent Tax List - is it legal for direct mailing campaign?

[Ryan Boehner]

I'm submitting my first open records act request for delinquent tax records ... to kick out a direct mail campaign.  On the form it says, 

I'm not a legal expert and I know this is done frequently in the industry.  The words "selling or offering for sale" seem to be the key as i'm just soliciting to BUY property, not sell.  Is that what makes this an ok process as the direct mail campaign starting point?