How much bandwidth is normal for a blog

Hi Guys,
I wanted to check out what is the amount of bandwidth that a blog with about 10 articles would consume. I have just started a blog. Obviously not much traffic (any way I am still figuring out how to add the affiliate product links etc, so I am in no hurry as such) but I suddenly noticed that I getting a lot of hits from some Chinese sites. This traffic is consuming 1gb a day. I know its meaningless---don't know how it is happening---but was wondering how much bandwidth would a blog on an average consume a month.
Incidentally, will these hits count towards unique hits. I could block the IPs but wanted to know if I gain anything by retaining this traffic.

You can check your monthly bandwidth by this simple formula.
Site size*daily visitors*30= monthly bandwidth

(*= multiplication)
Posted via Mobile Device

The biggest bandwidth eater is your images, the larger image size is the worst.