Jose, I know what you mean. I had all intent of bidding on this when I first found it and sent a message to the seller to let him know what he had (I did NOT mention the fact that I was going to bid on it) but the information I offered was completely ignored. Like you, this was not the first time that I have offered help in identifying someone else's items just to be ignored and on one occasion very rudely told to mind my own business.
On the other hand I have been thanked and even had people change their listings. Being the perpetual optimist I don't seem have the good sense to stop.
Robert