Advertised a complete Energon Omega Supreme. When it arrived, it was missing the visor on the headmaster. I sent multiple emails asking too see if it fell off at his house, or something. He never responded. Meanwhile, has posted all over the boards, so I know he received the PM's. In other words, I would not recommend this guy.
EDIT: A lot of things went wrong with this Transaction but in the end, I've got nothing but respect for SentinelPrime. The guy made Rampage look fantastic and it finally arrived today (01/2011) but that doesn't matter. Most people would of just ignored my PM's because I had absolutely no leverage in this transaction (Gift payment). However, SentinelPrime sent the item and all is 100% fixed! I wish the best for you and your family!
I got a good deal with him with the transaction. Got everything just fine. Needs to work a bit on communication but overall he's fine. I recommend.