Adding to NetWallah's suggestion, perl (the interpreter) 'sees' the numeric value of $price as -1.5, not the -1.500 you've scripted:

perl -MO=Deparse,-p -e 'my $price = -1.500;'
(my $price = (-1.5));
-e syntax OK

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In reply to Re: regex to match numbers after decimal by Kenosis
in thread regex to match numbers after decimal by doubledecker

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