This Velleman station from Fry's is an excellent bargain soldering iron. You can't replace the iron separate from the station, but since the whole thing costs less than a Weller or Hakko replacement iron, who cares? A little slow to heat up, and you have to check carefully to be sure replacement tips for a Weller will fit (some will, some won't), but for the price it's hard to beat, by far the cheapest I've seen with a temperature control and an ESD grounding connection.
--Dave
--Dave