Ever been to Ikea? Even if all you wanted was a pillow, you still have to go through the whole entire store and look at everything before you check out. That's like eBay. When the last time you typed something in the ssearch bar and got the results you wanted?
Try me. Go type Apple Watch Edition into the title and sort by lowest price, and select the category for Smart Watches see what happens...
*********SPOLER ALERT!********
THE FIRST 10,000 RESULTS ARE BANDS, CHARGERS AND ACCESSORIES.
Nevermind that there's a dedicated category for Smart Watch Accessories and a sub-category inside that category for Smart Watch Bands, no all this stuff can just go inside the Smart Watch category.
So after scrolling through 15 pages, you find one that says "APPLE WATCH SERIES 3 42MM NEW IN BOX!" for $250. This is it, you've finally found it- the Watch you've been looking for to complete your Christmas shopping! 
Of course when you click the link, The only thing for $250 is a 38mm Series 1 model. 
(the 42mm version is $50 more) And when you select the Series 3 model from the menu, THE PRICE GOES UP TO $389!
It's too bad eBay litterally does NOTHING when you report items. And since eBay gave sellers the ability to bait and switch, we can assume it's encouraged. But it's OK, I have another hour to spend looking at watch accessories.
