I already know that eBay has this kind of contract?? really? It is confusing, but, it is yes in their official eBay site. So, if they are doing scamming, how can? they are trusted eCommerce in the world. but, it seems so strange making this kind of contract mining of ETH.
Moreover:
Does mining work like this? By purchasing? I think that it is difficult to believe in this, to purchase at first, and then I will get at least around 0.01 ETH into my wallet? I don't think that I will buy it, moreover, it still looks strange.
And when I am looking for another source about this news, yes there is. But, it is sold out. Is it really? Sold out?
Here, https://www.ebay.co.uk/p/2274531226
It seems that there are several offers and they provide some different products of investment or mining systems.

It's kinda suspicious to me. Giving back .01 eth return with that contract. And to think you will gonna get that amount within 2 hrs is kind of inviting buyers to add the item to the cart, seeing that it was sold almost 300 already (279 sold to be exact). And i saw the % feedback was good, you can also check it.
 Either scam or a misleading offering of promotions. We shouldn't believe that kind of mining contract. Does ebay aware that they are supporting such shady item?

that so funny for me, someone sell mining contract for 4$ in 2H for 0.01 ETH, that was crazy.
yeah this is really close enought to say "this is scammer" because it so unpredictable for me.
but how can eebay loss that secure system or just eebay make some deal with ETH ??
sorry just my crazy think.