Mine cost £3.2k in 2009, Harley street guy wanted nearly £6k. Mine was a little complicated as I had originally snapped my tooth in half at the age of 9 in 1984. I had a screw inserted into the root of the old tooth and a crown on top. That lasted me for 25 years but eventually failed due to bone loss around the tooth root, and associated gum recession. So I had the old tooth removed, and had to have a bone graft (some type of power) into the root cavity to make sure there was enough depth for the implant. The gum was sewed over and a temporary bridge fitted, this was left for 6 months to enable the new bone to 'set'. I then had a hole made for the new implant, sewed over and left for 6 weeks. Then opened up and had the post and crown fitted. I'd say it took at least a year for the implant to settle down. I actually currently have an issue that the tooth to the side of my implant is wobbly, which I think is due to the historic bone loss in at the original tooth site, as I also have some gum recession. I also looked into going abroad but chose not to as mine was not a simple, whip out the old tooth, bang an implant in the cavity, attach a post and crown and bobs your uncle. If it had been then I would have seriously considered it!
Sorry if that was too much detail.
F.