The national group has a special appliance deal arrangement with The Home Depot with everyday very low pricing on select appliances that can be accessed via your membership with the local group. 

Keep on top of the PM for awhile to make sure he is doing all the things you need, i.e. registering the property with the City of GR, arranging for the inspection, having any work done in compliance with EPA RRP rules, following fair housing laws, using forms that are actually legal in Michigan, etc. 

If so, what are the possible arrangements for splitting the profit?

I've got to wonder what unmentioned and unposted arrangements you had with said borrower?

@Patrick Scifres  one thing your making the assumption that the seller ( wholesaler)  fully understood what a buyers broker arrangement is. 

Little flower and Irvington are good areas.

@Hillary Windrem, it does not sound like a fair arrangement.

Just make sure they know immediately that they will have to make other arrangements due to the house being sold.

Not to mention, the Mortgagee's likely violation of their financing arrangements.  

I know i'll end up doing everything (find, buy, fix up, and manage) so a 50/50 arrangement just doesn't seem fair.