On the subject of potentially durable dice, this Kickstarter sounds intriguing.
https://www.kickstarter.com/projects...al-poly-dice-s
Ain't cheap, though. And just because they're heavier and more durable doesn't mean they don't have bias, though one hopes the QC is good on that point.
EDIT: Just noticed the
Add-ons Only tier. If I'm reading that right, one could just get a bunch of D6s at £5 a pop. Still not cheap, but cheaper than getting all those non-TFT polyhedra. ^_^