Wow! Teeth are probably my specialist subject and I have paid for both private and NHS work. I paid privately for a wisdom tooth removed - £200, private gum work which ended up with a remortgage and only yesterday paid for an NHS dentist root canal filling (ouch!) with one x-ray, £35.00. I think the Turkish Dentists have been "filled" with misinformation on what we pay and they should consider an extraction!
Linda I would consider a long drive in the UK. Check out the NHS website where there is a link to dentists, put in your postcode and it comes up with the nearest dentists that are taking on patients. You can always pretend you live somewhere else - I noticed that mine is taking on new patients if you fancy a trip to Birmingham!!!
PS - have you considered a bridge rather than an implant?