It never ceases to amaze me how many sellers still don't seem to know that there is so much more to lose now by adding P&P on separately, and not including all of fees and other charges within the start price or Buy it Now price.
They must be quite happy to get a 1 star rating for P&P then find they no longer get their free 20 listings per month.
TRue, in my case the pen was up for BIN with offers. I made an offer which the seller accepted. Seller then posted it cheaper than advertised price to counterbalance the difference in sale price. I paid €16 he posted it for €4