why is it ridiculous to charge the renter over the property owner?
When you buy a home the realtor gets paid by the seller. In real estate in general the owner pays broker fees.
Diradirect is capitalizing on Americans who want to rent apartments and are 5,000 miles away. They figure the landlords in Israel will never pay a fee to list their apartments, rather they rely on word of mouth, hanging signs in yeshiva etc. So, they charge prospective renters to view apartments, being that they have no choice, because the landlords now have a free site to post the apartments on they capitulate and pay. Meanwhile the service is being provided to the landlords and being paid for by the tenants.