@David Iniguez
I stopped doing direct mail a couple of years ago, but when I was using Rebogateway, you didn’t pay per list (if I remember correctly). I remember paying the monthly subscription and then you get access to all of the lists that they provide.
I also remember running into some type of issue with the tax delinquent list. I think it had something to do with most homeowners eventually paying back the taxes, whether they missed the payment or were just late. In my county, I think the best way would be to get the records straight from the county so that you can see who actually hasn’t paid in several years and is in real danger of losing their home.
Lastly, I would be cautious with direct mail in Southern California if you’re having financial issues. The reason we stopped doing direct mail was because our response rate was less than 0.25% (we were sending about 2000 a month). And when we did get leads, there wasn’t much reason to sell to us at a deep discount when they could list with a realtor and get closer to what they were looking for.