Wondering if they are as effective as the website indicates and if they are worth the purchase and ongoing costs?

The first step tends to be getting your website dialed in for credibility.

If you look at the screen shot below from my property appraiser's website you will see that there is something called a Cap Differential.  

Also Lance Edwards Multifamily Success Home Study SystemJust google them and you will see their websites.

The trial service is useless.Since there is no ability to cancel the service on the website and there isn't a phone number to call, This message shall serve as notice that I want to cancel my trial membershipThank youJoanne Bragg

Only took 30 seconds to find this website, how much effort are you putting into this?

The MEDIAN rents (50% higher, 50% lower) for the entire country are surveyed, collected and posted by HUD on their website www.HUDuser.org by either county or zip code in all 50 states. 

The seller found our website and we negotiated directly with him How did you finance this deal?

You should consult an attorney or CPA for your specific situation.ANONYMITY: When you create the LLC, your name is recorded on the documents and published on the Secretary of State website for all to see.

What's going on @Evan MoraSomething I would recommend for you is this website. https://www.areavibes.com/Use this rating and classification system I have created over time to get an idea of the "Class" for the area - A class B class & so onHere is my rating & classification for each livability score.80 and above A+78/79 A76/77 A-74/75 B+72/73 B70/71 B-68/69 C+66/67 C64/65 C-60/63 D59 and below F