you need to take a look at
www.youza.com
keep our pay-as-you-go deal in mind.
>>
www.youza.com/prepay/ <<
Most hosting companies will bill you monthly, and will not credit you the bandwidth you did not use, but did pay for, for the previous month. They will even charge you a higher rate if you do over usage.
If you sign up for our prepaid hosting plan we don't bill monthly, instead, you can purchase extra bandwidth when you see that your account is starting to run out.
With this deal unused bandwidth is carried over to next month!