Online Coin Dealers

Thoroughly endorse the recommendation for Gene and Diann Bruder (typeCoin.com). He's very active on the show circuit (he's at PNNA in Tukwila right now - talked to him on Friday). When I talked to him in Grapevine (TX) a few weeks back, he had indicated that Long Beach will be his last show for a while however. Prices are fair, but he doesn't stock cheap stuff. Also Diann knows more about coins than she lets on, but it's very much "his" business.

Charmy is a nice lady too - talked to her on Friday.

Gary Adkins - Gary Adkins Associates (www.coinbuys.com) - I've exchanged emails with them about a coin, you don't get more honest than this: "Gary has looked at this coin from your first email and confirmed you first conclusion. This coin came from the mint with these defects, whether you call them extreme die polishing or planchet striations. The real issue is that we would not like you to buy a coin that you are not comfortable about. Please take your time and you can rest assured that we have a no questions asked return policy."

West Coast Coins (Toledo OR) - Revik has two ebay stores, safe_rev http://www.ebay.com/sch/m.html?_ssn..._rev&_sop=10 and safe_rev_7 http://www.ebay.com/sch/m.html?_ssn...ev_7&_sop=10 Very active on the show circuit ( ebay and shows only, no B&M). (_7 is the better stuff). Wide range, amazing volume - when I first ran into him in Portland, every other dealer had one or two of the series I was interested in, Rev had 4 or 5 pages of 2x2s.

Finally, Scarsdale Coin - http://www.coinhelp.com - although they have a web presence, they are not the most web savvy on the planet.

cheapslabs.com.. good place for certified coins

Try Miller's Mint too. a bit overpriced but great inventory and good for ideas.
Something to remember though is a great web site today may well be a lousy one tomorrow. Of all the ones recommended so far, I'd keep away from Littleton. I hate a place that puts you on a list and starts sending you coins without you asking for them. Another thing too is when someome recommends a place, for all you konw they work there. There are so many on line dealers and some may be OK, some may be great, some horrible.
Make your own list from what you read here and check them all out the best you can. Sort of like going to a used car lot. Never know what to expect.

HJB has a huge stock.

If you are into Buffalo nickels, Dave's Coins in San Diego is outstanding. HUGE selection and Dave is a truly expert grader, very fair, doesn't hassle you on returns, and does 5 month layaways. Super nice guy. He does not post pictures on his website ( http://www.thecollectorsfriend.com ). I have acquire most of my best Buffaloes from Dave, all raw, including my 26-S (AU55), 24-S (MS62), and 21-S (AU55). I also have a 1919-D MS64 on layaway.

My only caution is that he offers a lot of better coins "Straddle-Graded;" e.g. he will grade a Buffalo MS64-5 or MS65-6 and then price it in between. I'm personally much more comfortable buying a coin with a committed grade in case I decide to get the coin slabbed.

Dave also has huge stocks of other coins, especially Indian cents, Lincolns, Jeffersons, Mercuries, and other lower-denomination coins. Great resource...

I agree with zxcccxz except Talisman Coins, they don't have ethics.