Very disappointing experience.
I called this guys and asked for the price for implant+sinus lift. They said that because of the current promotion (on Groupon) it will be no more than 3500 aud. That price was better than other clinic and I took a day off on my work and went to them for the appointment.
They charged me for appointment and after several days sent me the treatment plan with the sum 4400 aud ( 900 aud more) - surprise!
After I called them they just told me that the first time quote was mistaken and they can do nothing with that.
Get ready for the price surprise if you decide to have a treatment there.