I'm not familiar with any on line title search or appraisal entity, except to look up valuations and see that their values were way off, like Zilow.
Some may be missing what a title search is or does, it has nothing to do with assessments, valuations or taxes other than to see that taxes are current.
COnsider when looking at anything on line how they would address this one issue:
Mary and John were prior owners jointly and later get a divorce, several years later they are divorced and the decree is filed and John sells the property to Bob and Betty who get title insurance but had an exclusion in coverage as to liens or encumbrancs not shown of public record. (Mary gave John a Quit claim deed, but it was never filed by John) John is killed in a car wreck, but never updated his will.
Then you come up and buy the property from Bob and Mary, close and you have the same exclusions on your title policy as to issues not shown of public record.
Three years later Mary passes away and her son inherits all.
Now, Steve, son of Mary and John makes a claim to ownership of your property due to Mary not executing the sale or warranty deed and makes his claims under her interests inherited.
Now what? How is your "on-line" company going to assess the requirement that a quit claim deed had to be filed and that Mary's holdings passed to Steve did not include your property?
While such issues do arise, you'll need to get an attorney to defend you, against the claims and to seek coverage by the title company in making an error in the search or filing any damages....$$$$$$
A title search done by a title company places much of the liability of such issues on the title company and title opinion. If you do it yourself, it's on you or perhaps your $99.95 internet company. And I bet that any internet company will have a disclaimer concerning the chain of title being insured or guaranteed. Good luck