I think you may very well have to resign yourself to not having one.
With only $8 a month to spare you are not going to be able to
afford basic cell service, let alone a data plan.
Cheapest one on eBay is 59 US dollars. Either save up or give up. Just giving you a BB can't be done unless one knows what carrier you use. Is it GSM or CDMA there are so many variables.
Posted from my CrackBerry at wapforums.crackberry.com