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Black Friday not the cheapest time to shop, says consumer group
(www.theguardian.com)
This is a most excellent place for technology news and articles.
I'm sure you know, but I want to add to this in case others do not.
These product lines are usually really poor quality. They might look like the original and have a similar model number, but a TV, for example, will have less ports, lower resolution screen, or a lower quality screen.
So, if it is an electronic, look up the model number and if you can't see a lot of reviews for it, then this is why.