Locating property owners

[Rodney Dixon]

What are some more cost effective ways to locate vacant property owners besides: (1) Sending letters to the address thats affiliated with the vacant property according to the MLS database, (2) Using ACCURINT (because it cost $300/month plus pay per click according to a real estate investor that has previously informed me of such fees due to their membership with that online company.

I'm starting out in real estate investing by doing wholesale transactions and have a tight budget to do so with. Therefore, all suggestions and advice are welcome to this question.