Originally posted by aslyfox you can filter it to show only items from certain locales - specific European countries, the EU, etc
Of course you are right.
A couple of years ago (when I wanted to expand my lens collection), I did this.
But at that time prices for PK lenses on German eBay were still very low (now they aren't anymore), and on Pentaxforums they were MUCH higher (30-50%), so I gave up.
And presently I have all the lenses I can afford (unfortunately, even more).
But for the OP it could be an option.