Because $5 is just a few dollars away from $100.
$100? What have you bought thats $100? What did I buy that cost $100? Just how the who, when, how, and why did you pull this random number out of your ass?
Mini-android-based tablets can be found as low as $37 free shipping if you spend enough time on a chinese site.
You can go to any walmart. best buy. or family dollar right now and pickup some $50 samsung phone with android and bluetooth.
I spent $42 on a used HTC Evo 3D (That one with the 3D screen and cameras) a month ago, Dual-core 1GB Ram, a phone that 2 years ago, would have retailed for more than 10x that price, and sell on eBay for 3x that price.
But yeah, I'm going to admit my ignorance that I don't know WTF Tesco even is. $5 mp3 player? Please... Who honestly would even consider that? My knowledge of off-brand $5 mp3 players might pale in comparison to yours, but thats only because anything less than a Sanza isn't even a blip on my radar. And for the price of a Sanza, maybe a little more, at the right time and place can get you ALOT more.
So go ahead and stretch the "any brand" quote so out of context of the thread it was posted in to jump off the subject of the Sanza and onto your random toy you found at a store, but I still don't know whose ass you pulled that $5 and $100 comparison out of.