There are a bunch of chapters in MD, check out ducks.org for a list. Of course, it won't tell you much about the chapter itself. I've probably been to events with a dozen different chapters, from $250 a person (and not as a "sponsor", either) down to bare minimum. My chapter in Caroline County is a pretty casual mix, coat and tie very optional, we come close to selling out at around 200 every year- I personally think that's about the limit for everyone to get a chance to bid on something. We try to do a couple other events- we could probably use some fresh blood. I'm sure there are closer chapters, but send me a PM if you're interested.