the reason Hakkos are so expensive is because they are ESD and are tempurture controlled...Not power controlled light a dimming light switch on cheaper stations or FULL BLAST all the time like a pencil iron.
You only time you NEED an anti-electrostatic discharge iron is if your doing PCB work with sensitive components...
For battery work, you dont really need it. But if you want to, say, replace an antenna wire, you can change the tip and drop the temp waay down, and you wont mess anything up on the board.
That being said.. I have a weller 40w pencil, and it works pretty good. Then I got this
for like 40 bucks, and its not really fancy, but it has a stand, and a sponge/holder, and since the base is power controlled and not temp controlled, you can unplug the iron itself (standard 2 prong)and plug another one in up to like 300 watts.
only thing I don't understand is the base is a 3 prong but where you plug the iron into it its only a 2. Figure if it was also a 3 it woudl be an easy way to make it ESD.