1.  The product or service that clients pay for - Helping a tenant find a rental property.

2.  I haven't talked advising the client what most landlords look for in tenant qualifications.  For instance, most landlords want to see 3 times the rent in monthly income and will want to see verification of income either with two months of pay stubs or up to 2 years in income taxes for self employed tenants.  Most landlords will require background and credit checks.  Landlords also request two months of bank statements.  If the landlord permits pets, then there will typically be additional costs for pet deposits (sometime non-refundable or partially refundable) and additional monthly charges for pets along with species, names, age, weight, breeds, decription, etc. on the pets.  

3.  The reason I haven't spent time on this is that while I have helped tenants find a property to rent, I haven't spotlighted the services because tenant placement is the least profitable of the services I provide.