Another vote for a 2000, given your criteria.
Are you specifically looking for floppy disk gaming, or WHDload ?
If you are really patient, you might be able to get a 2000 for 50 bucks but closer to 100 is more likely. Shipping can be a lot of course, they're heavy beasts.
It's common to find them with various upgrades, which can save you grief long term. At the very least, finding one with a bit of extra RAM can be nice. Even for just floppy disk gaming, a decent share of games benefit from having 2 megs of RAM available.