you can use RegEx in the sorting callback, just like that:
howmuchdata = ["$85", "88 dollars", "$9.35", "$95", "96", "126", "5.95", "$36", "€124"];
howmuchdata = howmuchdata.sort();
howmuchdata = howmuchdata.sort(function(a,b){
a = parseFloat(a.replace(/[^\d\.]/,''));
b = parseFloat(b.replace(/[^\d\.]/,''));
return a-b;
});
console.log(howmuchdata);
Good luck!