As for real estate agents ripping off landlords, i know do it to both of them. they treat tenants badly so i always over inflate my prices, the last one for instance the landlord rang me and asked how much to fix the decking in one of his rentals, get the to have a look and it was rooten to hell. Materails price to fix was $2000 total quote was $9470 i got the job, another one of his houses had 12 rooms excluding lounge and kitchen, bathrooms every other room was numbered 1 to12 and each had a student paying $600 per month and there he is telling me he cant afford to fix the tiles on the shower wall for $1000.
I have many client whom are landlords and there all the same. (tight asses)