[geff82]

On a related note - what is 10x less? Usually people mean 90% off. Wouldn't 10x less be the following: list price is 1000$. You get a rebate of 1$ and then pay 999$. Then you get a really good discount, 10x of that and then you pay "10x less" while still pay 989$?

[elcomet]

It just means x/10

[fellerts]

That's a tenth. I agree with GP, "ten times less" is ambiguous.

[hawski]

If "ten times more" is "x * 10", then "ten times less" is "x / 10".

[Luc]

You understand '10 times more', right? Well, '10 times less' is the inverse of that.