Avoid this kind of useless shop-savings extensions that in facts can spy what you are looking on the internet, it's just collecting informations on you to profile you and similar customers to finally target ads/products/services. That's desguished spyware in counterpart to provide you a pretended nice service for free.

And just about the service provided: this kind of extensions (lots of similar exist like this one) can modify the webpages on-the-fly and also can censure some parts or search results to guide you to buy to a specific shop... instead of a concurrent. And guess who is paying the extension editor to do that? Sellers?
Just look at what this extension is requiring at the Permissions part...

Mind again before adding browser extensions!

bad

Ho sempre acquisto su AliExpress.com
Li tutto costa più conveniente, è possibile ripristinare i soldi (se non vi piace) e anche con spedizione gratuita.

Quando acquisti, non dimenticate di utilizzare il plug-in universale per visualizzare il prezzo minimo per AliExpress. Aiuta a determinare il prezzo più economico del venditore, trovare per foto e confrontare il prezzo di questo prodotto con altri venditori.

Risparmi i soldi e tempo:

https://goo.gl/VsR6ob

Dieses Ad on ist das ,worauf ich lange gewartet habe.