Wow. Fascinating indeed that "you looked". Especially since Sulit.com has not been active for more than a year. They merged last year with OLX.ph, which is the mainline online ad place here isn the Philippines, WHERE I LIVE. Craigslist is also here, but not used very much. Ayosdito and Sulit were both merged with OLX.
A quick search of the OLX site does not back up your premise. All I see are iPhone 5 and 6 with an occasional 4! I can buy an iPhone 6 for 15-25000PhP (iPhone 6Plus with 128g for 24500PhP)(current exchange rate of 47.115)
https://www.olx.ph/all-results/q-iPhone-2/
So, I believe your piece is nothing more than FUD!
You are correct. My friend did not get the link right. it is OLX.PH, but I looked at this link:
Actually, to to olx.ph and search for iphone 6 Plus. There are many around that price. I can't find the URL on the page, it is hidden somehow, probably to prevent people from linking to it. This is not FUD, or I would not report.
Just curious, why do you live in the Filippines? Are you retired over there? My friend likes it apparently, he has been there more than a year.