Bob's 2-day seminar is generally $500, but a 10% discount is often available if you register by a certain deadline. You can also audit the workshop for $75 per day, but you don't get to participate.
And yes, it's worth every penny. Bob brought his workshop to Atlanta twice in 2008. I audited the first one and learned a great deal even though I wasn't able to participate. I learned so much more the second time around -- especially getting in the booth with Bob coaching one-on-one. My first read (a comedic character) took like 30 minutes and changed dramatically between the first read and the last (as Ed mentioned in his review). By the time I was up for my second read (a dramatic villain role), I had learned so much from the first experience that Bob didn't take nearly as much time making adjustments with me, and actually said my first take was excellent. What was funny was that I told him my instinct was to do a more comedic take on the villain but decided against it, and after he heard me perform a bit of it he said he liked that character even better than the one I'd done in the booth.
It is... sorta. Check Bob's schedule on his website:
http://bobbergen.com/appearances.htm
If I were you, I'd go ahead and make plans and get your deposit in to attend the August workshop in Portland, OR. It's likely to be the closest Bob will ever bring his workshop to where you live in WA.
Even if you aren't interested in pursuing voice acting as a possible career, if you are an animation fan at all, I guarantee you it's an entertaining, informative, and rewarding experience. Actors generally get more benefit out of it, naturally, but cartoon fans would enjoy it too. Bob's not just an actor -- he's a great instructor, and a showman as well. The combination of those characteristics makes for a really great experience.
I was also rather surprised at some of the other known talents in attendance at the same workshop I took here in Atlanta:
Steve Stone (a very successful promo announcer),
Kara Edwards (VA from Dragonball and other anime titles), and
Marsha Crenshaw (The Brak Show, Frisky Dingo).
The best advice I ever got from one of the first voice actors I ever met was that you never stop learning. This is true for aspiring voice actors as well as professionals who've been in the industry for decades. And when these VO veterans showed up at this workshop, I thought to myself, "If these pros are still taking classes, I have so much to learn and a long way to go."
Bob's one-man show is very entertaining as well. I have a review and some photos from one of his performances I will try to get around to publishing here at TZ before the end of this month.