If you say "20 times cheaper", you're actually saying the price is -19 * (or in other words, you get paid 19 times the amount you are now paying for the use) because "one time cheaper" already refers to a 100% discount. This is a very common and a very annoying misconception.
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Damn HTML formatted text :) That one crazy-looking sentence was meant to read:
-19 * [current price]
That is so wrong in every sense.
If you say "20 times cheaper", you're actually saying the price is -19 * (or in other words, you get paid 19 times the amount you are now paying for the use) because "one time cheaper" already refers to a 100% discount. This is a very common and a very annoying misconception.
Read more on the subject.