sub base_price{
    my $self = shift;

    if ( not $self->{_base_price} ){
        $self->{_base_price}
            =  $self->{_quantity} * $self->{_item_price};
    }
    return $self->{_base_price};
}

##</code><code>##

perl -e 'split//,q{john hurl, pest caretaker}and(map{print @_[$_]}(join(q{},map{sprintf(qq{%010u},$_)}(2**2*307*4993,5*101*641*5261,7*59*79*36997,13*17*71*45131,3**2*67*89*167*181))=~/\d{2}/g));'