Thanks so far everyone.
I'd say all said and done cables, stand, and shock mounts (not a bad idea, right?). $500.
Umm, you'll have a pretty hard time getting everything for that price. Even a pair of used, entry-level mics will run you $200-250. I see the H4 is around 260-280 new... say you get lucky and get that for $225. Long cables will probably be $30-50. A decent stand is going to run you $40-50 (based on the heights you'll need for amphitheaters). Plus shockmounts, a bag... you'll need a slightly larger budget. Here's the rig I put together this year:
Avantone CK-1 mics: $300/pair, new (included shockmounts)
used JB3 (recording device): $125
used UA-5 + 25' XLR cables + battery: $240 (or so)
used 11' stand: $50
power cable for battery: $20 (radio shack)
camera bag for carrying everything: $40 (got a very good deal)
Other accessories from B&H: $30
So my total bill wound up being around $800. I think my original goal was in the $600 range.
I agree with the SP C4s over the C1000s. I've heard some good tapes with the C4s.
I recognize your username from antsmarching... I assume you're planning to tape some DMB?