1 lone clean sale with 2 supporting duped sales

Item 1 (Clean)

MP | Buyer: MP sale (see compile below) @ May 2

Item 2 (Duped; 2 owners have one copy each, 1 in private inventory)

MP | Buyer: MP sale (see compile below)

Item 3 (Duped)

Seller | Buyer: Untrace

Also has one MP sale with the buyer untraced

Item 4 (Duped)

Both in-date users own one copy; no recent sales

MP sales

3 sales all at $170

Key

Apr 28 - $1.99 -> 85 (duped)

Apr 29 - $1.97 -> 86 (duped)

May 2 - $2.00 -> 85 (clean)

It's unclear which duped sale belongs to which instance, but the May 2 sale is clean since the owner acquired it only after May 2

Sellers

BP - none

MP - none

SCM - none

The clean MP sale is the only usable sale per the suggestion rules; the other two MP sales for duped instances act as supporting evidence, and therefore the sale with 86-key equivalent will not be used to set a range

Taking 85 flat