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"Currently available for $31.42".

Which is 31.4% off the $45.81 retail price.

I almost feel like they inflated the price for the lulz, so that the 31.4% discount would be in effect.

I can't think of another reason why that situation would occur, so my feeling is stronger than "almost".

Pi is 3.1415, so rounded to four numbers that's 3.142.

you rounded that incorrectly, the next digit is a 9: 3.14159265… but of course you are correct about the $31.42.

4, i know there's a 4 after the last 5. memorized up to that decimal place way back in the day.

Just realized it's a 35 rounded to 4.

You must be popular on parties.