I'm currently waiting on a carbide burr via amazon.ca, but the delivery date says oct22-nov13 - fingers crossed!
A few months ago I disputed an order that was 5 months late - disputing every month or so, finally I got my refund. The parcel showed up a few weeks ago, and now I feel guilty!
When I (briefly) considered becoming an Amazon seller for an item I was going to make, I attended a local Amazon Sellers' Group. What I learned is that many overseas items use "vacuum pool containers" (vacuum in this case meaning they aren't full). Companies wait until they have enough orders, then negotiate space in an unfilled container that goes nowhere near you. It then sits in this country or region. Eventually their shipper negotiates space in another container that has space and may even go back to the original country it comes from. This iterates multiple times until it gets to you, which is why it takes so long. I learned that in the shipping industry not everyone ships knowing how it will arrive, as this is dependent on price. The distributors who sell at lower prices often use this technique and the result is a 5 month delay that looks like a lost package to you.
I have had the same experience, contacted the seller and been sent another item that arrived (because the stars aligned and its route went by way of containers that were closer to full, and thus got shipped sooner). Sure enough the original arrives months later. Once I even contacted the seller and offered to return or pay for the second (original) item. They couldn't be bothered for the price, which is quite a comment on the markup I guess.
I also learned that sellers can partner with other sellers to share container space purposely. There are data companies (or maybe Amazon itself sells the data) that look at where an item's COO (Country of Origin) is, its ratings on Amazon, its shipment history, etc. You then partner with a company that meets your needs and piggy back on their more reliable shipping strategy. Oddly enough, some companies purposely buy bad pool space knowing it will take months past the ETD. They do it not just to save money. Some companies have been known to buy and sell a small amount of competitive products and
purposely ship them via a known bad pool route just to upset customers. In a market with only two or three brands, customers often don't differentiate by seller, and just associate the bad reviews with the brand name. Amazon tries to toss out reviews that reference shipping issues, but many people read between the lines and most reviewers can't separate their bias of the shipping time from the product itself. Case in point: I've never had an Amazon review rejected because I
complemented the shipping speed, but have had multiple ones rejected because I
criticized it.
Amazon is a fascinating business and there are a bunch of good books about it. I was also fascinated to learn in the user group that the reason why you see a box of wooden toothpicks selling for $6000 is because sellers know many people will buy a higher priced product thinking it is better than the similar item priced just slightly below it. Sellers set an algorithm that monitors their competitor's price and then increases their own price to a marginal percentage above it. But if the competitor has done the same, the result is dueling algorithms and a box of $6000 toothpicks.
I learned a ton from this user group, much of which disgusted me. I must have looked pretty doe eyed when I joined.