I purchased an item (dust collector fitting for miter saw) on eBay. I had looked at it on Amazon bur found it cheaper on eBay so i purchased on eBayover the weekend. It came today shipped by Amazon. ????

At first I thought I must have purchased it twice once on eBay and once on Amazon. I checked my order history on Amazon and found I did not buy one on Amazon.

Has anybody else experienced this??