Am I right to be suspicious ?

sequence

I sold something last week and posted all fine. Today I sold 3 more of this item, which wouldn't be unusual. They were sold to 3 different user names, which also wouldn't be unusual. However the "three" buyers all have low feedback, and are all the same person as the one I sold last week, at the same address ? Why would someone buy the same item, three times using different user names, at the same time ? Seems very odd/suspicious to me ?! These are low value items worth around £5 each.

It can't be a competitor looking to leave bad feedback, because there are no competitors for the item I sell.

cyberbob

Maybe it's a competitor buying them cheap off you and selling them for more elsewhere. Or someone looking at staring up and selling them on ebay.

sequence

Could well be Cyberbob. Time will tell.