Reasonable Offer guide.

I snagged this chart from a post that had TONS of comments! I use PM to get by. Posh takes a HUGE cut!! In the meantime, I need Posh so I can sell what I own to get by! please don't offer me 11 dollars for my vintage betsey dresses. That's beyond rude. Someone offered 9 dollars for a 20$ item then I countered for 10 and they declined it . Who is doing this ? Please keep these prices in mind when you 'make an offer' on anyone's closet!!!