The best I have seen the PS6 Rayovac 15 minute charger (comes with 2 AA's) which holds 4 AA or AAA around here is Walgreens for 34.99. Radioshack sells the same charger branded for them (of course) for $39.99. But Ace sells them for $52.00, yikes!
Now, having said that, you'll want to compare the IC3 (2000 mAH) battery prices too. But they supposedly also take regular nihms which are not charged in 15 minutes. Regular nihm's appear to be cheaper than the IC3 batteries.
I think the Energizer's for their 30 minute charger (comes with 4 AA 1850 mAH, but can get bigger ones 2150mAH I think) are cheaper and are also regular nihms. This unit I have been told can be had at Sam's Club for around $29.99, I have seen that price online as well.
Moderators, this might have to be moved to "Flashlight Electronics - Batteries Included". Please do so if it's appropriate.
Mike