I'm not going against what you say for the sake of it willie (you may think I am) but I know of a couple of people who went to Budapest and had a super job done by a brilliant young dentist who lectured at the local University.
Pre-visit comms were good and a treatment plan devised. Then two trips of around three days each, which doubled as holidays (Budapest is a beautiful city, full of hot birds incidentally) and the overall cost of the treatment including flights etc, was still under half what it would have cost here.
OP, I can provide details of the surgery concerned if you wish.
As for implants where there has previously been an extraction, what tends to happen is that the jawbone in the area recedes, so depending on how long ago the tooth was removed, a small bone graft may be required.