Munging the data
my $product_file = 'product-list.txt'; open my $fh, '<', $product_file; while ( <$fh> ) { s/GBP/£/; s/EUR/€/; s/USD/\$/; print; }
my $product_file = 'product-list.txt'; open my $fh, '<', $product_file; while ( <$fh> ) { s/GBP/£/; s/EUR/€/; s/USD/\$/; print; }