Hi,
I search for Blackberry Pearl batteries on eBay, and well there are some that are around 5 dollars and there are that around 40 dollars. Is there any difference between them ? All of them claim that the batteries are original.

ya but you know the saying you get what you pay for .. i would say stay with a sponsor they have them reasonable

I think the cheaper ones are Refurbs

Go with the reputable sponsors of BBF they prices are VERY reasonable!!!!