This is a really good idea and if they got the local offices right it would fly.
We tried to buy through this group in Costa Galera and the offices could not find the key to give us, infact they did not have the property details on the system.
They gave us a print out which had a price on however the owner sent us a copy directly, which was priced substantially below the advertised price.
It took 10 days to view the property as the office in San Pedro was a nightmare to deal with.
Shame as I think this is a very good idea indeed!
I wish them luck, maybe it was a bad apple in the office?
Oh and for the record, if you type Vender direct in google they have had 889 views for that term!