639.00 is my guess
20 characters.
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669.99 would I guess…
Im guessing $631.41 …
Could also be $693.14
I hope I am right… $615.16 USD
my guess 639.99$ 202020
Right, 2*Pi was my initial thought as well.
Hey, It’s Prime Day, 699.99 No Sincerity
X not repeated, 628.32 is a good idea, I may adopt in future
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That is, 6XX.XX - all different numbers (including 6) ? 
699.99 I guess. Makes sense to me.
678.90 then…
615.16 - 15&16 July Prime Day
my guess 648.99…
you’ve got 1 of the X
I will answer 615.16, but it already have the answer.
so 615.07
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$605.00…bingo!
BING BING BING!
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Put me down for $685.95.
New guess then.
635.23
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