WTB (maybe!) Pentax AFA 1.7x TC

As I'm almost on the point of going for a DA*300 I wonder if anyone knows of a source of the only TC that appears to work well with the lens - apart from the ones on e-bay that seem to cost the best part of the price of a lens!

Well this one definitely works, at least mine does, tried and tested,
"I can now confirm mine does work with the DA* 300mm as well.
Exact Markings are:- Pz-AF 1.5X TELEPLUS MC..... KENKO....(in white) DG (in gold)"
Look in the lenses forum to see the thread.
https://www.pentaxuser.com/forum/topic/teleconverters---again--32509/p-1

Well the cheapest 1.7x is from Japan which is £370 with postage. Add 25% for import duty and VAT ... total is approx £460.

One time offer and I'm doing you a favour ... you can have mine for £400.