I know Beach Camera is a legitimate and well respected company and I have bought from them through ebay before with no issues. They used to have some really good deals on the 5D Mark II (about $2350) but those prices are no longer available. Looking through their other listings I ran accross this:
Looks like a preatty amazing deal. After doing a little more research about the printer bundle rebate, it doesn't seem like the 5DII is included in the rebates. I asked the seller a question about it and will hopefully hear back soon. If there is another rebate that I missed, then this is a great deal.