Limit the extra noise that may come from having to broad of a scope.

I don't think the standard PAR agreement requires you to give the seller anything unless they added it like @Steve Babiak said. 

. ;)If you are in or around Ocala, I am adding new members to my brokerage literally this week and again in August.

Even if so, that's still an extra $200/m than your "about $3k" would suggest. 

You could pay them a little extra to restock supplies and let you know about any repairs that are needed.

I see he's added quite a few counties, and that would be trustee sales scheduled and/or S-TR (or equivalent) filings vs.

Should have added: I already have an agent licensed in Colorado and Wyoming, if that matters.

I had the parent fill out a rental application so I could run his credit.I also paid a few dollars extra to check his criminal record (the apartment association in that area does both my credit and criminal checks for me).

I am considering the route of an LLC as a property management company vs a DBA - but without the added liability protection - they are essentially the same. 

On the flip side if it was significantly distressed it's possible that your hypothetical $30k actually added more value than that to the property. looking at it in terms of percentage isn't really the best approach to look at how much value you've added to a property.