Always on the lookout for good material for wicks, I stumbled across this.
1/8 Fiberglass Tiki Torch Wick. Buy 10 feet get 10 feet Free. $12.75 eBay: 112006257748
It's virtually identical to MTH wick, and so far in my tests, performs as well too. If you're looking to test an alternative, it's a pretty good gamble. It's basic all 1/10 the price of buying the MTH or Lionel wick.