From the picture that you sent, it looks as if you possibly grind your teeth at night. I think that you should consider a Maryland bridge as a transition to the implant while you wait for medical clearance to have the surgery. If the tooth that remains can serve as a strong enough support, then...
The treatment fees depend on the number of implants placed and the type of prosthesis, snap in or fixed. The most important thing is that they are stable so you can chew.
You seem to have undergone full mouth implant rehabilitation. I assure you the permanent teeth usually feel a lot better that the temporary ones which are made from acrylic. The permanent ones are mostly all ceramic or porcelain fused to metal, which gives them a much better finish and feel in...