The web site advertises them for $997, which on the one hand is a lot of money, but one deal pays for it, if you get a deal, of course. 

Don't you have enough "Pro" people paying to afford a better mobile app (that can edit, quote correctly, add images) I use the mobile version of the website using a web browser from my smartphone - that does allow for edits, and I even think images can be included too.

If you look hard enough, you can find almost all of this information through some innovative footwork on your part, or through the web “Somewhere” at “Some Point.”

Looking for best online resources to find properties with more than 4 units.  Any suggestions?

If you want "true" sales data, get your county data sets and do primary research. realtor.com is a web site owned by Move, Inc., which was acquired by News Corp.

After reading about the HouseFlippingSpreadSheet on J Scott's web site I am thinking about buying it since I am planning on doing my first rehab next year.J's recommendation goes a long way IMO but I was curious if anyone else has any suggestions or advise about this product or any other similar products they use and recommend.

I found out that it was due to the web browser I was using. 

Some counties web sites are more user friendly than others you may have to look at a tax parcel map and search by the parcel in the search function.  

I would use a large one since they often can give you a login access to do your own searches via the web (I use Chicago Title).

(You can't see their ratings on their web site unless you pay.)