A Buyer bought an item from me on Friday which was not paid for.

Ebay has kindly been sending reminders that they need to pay.

The item was a Buy Now and then Saturday I get a request to cancel the transaction with no explanation as to why.

I checked the feedback of this person - they are a "new" buyer (and Seller) but even with 100% feedback (given Seller's aren't allowed to give negative feedback anymore I believe), there are a least 3 Sellers who have advised this is a bad Buyer - stating that they haven't been paid and no communication.

I am rather annoyed given that I don't even get an explanation and given the other feedback provider is this person a "habitual canceller".

Should I just cancel the transaction or ask them for a reason why they want to cancel or lodge a dispute for payment with Ebay - this doesn't happen to me often so I wonder if it is worth the angst.