At current, the information given about the B/O here is correct. However the seller is demonstrably active now, having responded to an offer 14 hours ago. I imagine this situation will go as follows: This suggestion will stay open; should the 150 seller sell, his sale will be capped at 150, and since you purchased it for at least 176 but won't confirm if more, I would consider 176 a valid high-end. If the seller doesn't sell, 150 is still a valid low-end because there's an unsold at that value, with the same logic applying for the high end.. So unless you disclose the amount of paypal given, I would consider this suggestion valid.

Well the only thing there that makes me think it hasnt been there for 5 months at that price is the fact that he declined 80 on the tyrannus in april and then accepted 70 two months later, which'd indicate that 150 has been there for around a month and a half (as apparently he lowered his prices around that time), which is pretty solid. I also dont think hes really inactive, he has a ton of views on that trade. He may not bump as much as an autobumper, but doesnt seem completely inactive (he replied to offers within 5 hours)

Btw, people saying "I may buy this hat, Ill let you know" do not consitute as direct buyers. I've had 20 of those this month alone, and you may guess how many of them actually bought my hat. The answer is zero.

In my honest opinion you should just disclose the paypal. unless it was 300 dollar or so, this suggested value is most definitely better than current, judging by that seller. There is absolutely no reason not to disclose it here. This can get a range with 150 as low end and your sale with paypal as high end. Im not opposed to a really large range here as the drop is imminent, but the magnitude seems uncertain.

Saying paypal was involved but refusing to show how much serves no purpose; It is only most frustrating for suggesters and moderators to see someone point out a 'mistake', who then refuses to show what the right scenario is.