Well 3c...

on my main trading account I spotted 3 low DSR's for postage costs. 1 was from one buyer and the other 2 were from one buyer who purchased 2 items on the same day.

As I have stated, 3 negs from one buyer = 1 neg in feedback %calcs but

2 low DSR's from one buyer = 2 low DSR's in calc's.