This could be an opportunity to step in and optimize the property. 

I'm even hesitant to give you the web address I'm about to give you, because if you haven't looked for it and found it already before coming to the Bigger Pockets forums to ask strangers for help, you're way, way behind the eight ball.

I have a discovery call with Revedy in a few days, and I can’t find much about them on the web other than their own website.

Many homes on the same street are multifamily, and this property is optimized for a two-unit setup.

He did it through (1) professional website (2) constantly optimized for SEO (3) new social media articles at timely intervals (4) sponsorship of charitable events (5) ongoing public relations campaign (6) billboards (7) advertising in local newspapers (8) SEM .  

Hopefully you did not pay too much for the dirt. 1 acre is optimal these days because of desired double to triple drive thru for QSR.It can become a problem because if they make the building smaller you get less rent but they do more sales.Example a QSR used to be 3,000 to 4,000 sq ft but now instead wants double drive thru's as not many go inside for fast food like pre-covid.If you get 1,000 a foot less at 30 a foot you just lost 30k NOI and now at 5 cap example paying all cash NNN once developed you have lost 600k value.It can fine as long as you do not overpay for the land.

I only used their web based dialer once and did not really like it, but I should give it some more time and a couple of more tries.

All in one and optimization is key for me. 

There is another way to see the listing prices history if I can't see it on those webs?

Online Auction Sites - Realauction.com, LLCYes you're right, but it's not the only one, there are other platforms depending of the state and the tax lien type (e.g. redeemable has a specific platform), some county has his own system, finally, the main difficulty is to be updated on all upcoming auctions and retrieve the lists to do the research.There are no other platforms for the counties appearing on the Realauction web site.