#!/usr/local/bin/perl

%Inventory = (a=>45_000.00,b=>120.00,c=> 450_000.00,d=>40.00);

$sortHash = \%Inventory;
@keyList = sort sortHashByValue keys %Inventory;
foreach $key (@keyList){
   print "key==>$key, \tprice==>$Inventory{$key}\n";
}
sub sortHashByValue(){
   $$sortHash{"$a"} <=> $$sortHash{"$b"};
}