Definitely do your own research to see if it warrants a change.  

They left their Alexa behind though so that was small revenge and he also has a warrant out for his arrest if he ever decides to fly back to the US.

@Jacob Gerber just a polite email would be warranted.

Also, the condition of the property at the time of the sale may have been awful and warranted a very low price.

This is in a good neighborhood, so it definitely warrants further investigation.

It is not that easy to convince an appraiser in that you did anything substantial to a property in two or three months that would warrant that kind of jump unless you literally gut rehabbed the place. 

This is super common in short sale properties, but more often it happens in purchases from bank-owned, because the bank will not warrant that the HOA dues are paid in full.My academic approach here would be to call the title company and make a claim that the title company cleared HOA dues. 

My predicament is - I'm not doing anything I wouldn't ordinarily do for my clients as their Realtor offering value for an eventual buy side commission, so I'm trying to figure out what value I can bring that would warrant partnering with me with equity without me coming in with cash.

Just because a market is hot, like Dallas, does not automatically mean that every house in the city has kept up with repairs and upgrades to warrant the higher prices that are being achieved by those houses, that have kept up.

Just because the address is Malibu doesn’t always mean it’s a great location that warrants a huge price tag.