Doesn't seem that unusual to me.
My proxy list has been running online for about about a month. I decided to just check my awstats and was surprised by the amount of bandwidth it used. It was more of a Happy surprise rather than a shock.
After 10,000 hits my website had only consumed a little over 2 gigs.
Is this normal for a Proxy list?
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Yea, compared to proxy sites, proxy lists use no resources
Download your site and you'll see it is about 170kb (html/css + images + js)
175kb x 10,000+ hits = 1.6 GB
Obviously it should be less since it should be saved into the cache folder to avoid having to load pages, images, css and js files again to load pages faster and save bandwidth. However 2 gb per month is really not that much considering that any reliable webhost nowadays would give you at least (300 GB bandwidth) for a couple bucks.
2 gigs in 30 days is nothing. My forum averages over 100 gigs every month. So if your at 2 gigs a month, that is nothing.
They offer unlimited space which is not a problem at all, the problem is other features like cpu usage, inode usage and processes that are not unlimited so when you reach that amount of bandwidth (100s -300s GB), although you can use more bandwidth the cpu usage would go over the limit and you'll have no choice but to upgrade to a vps or dedicated.
A regular website (not proxy, warez, downloads, photos) using 300gb bandwidth is probably getting approximately more than 1 million hits per month so It's obvious it should not be allocated in a shared plan.
Sites like Hostgator are able to oversell like that because they have the financial abilities (smaller hosts can't do that). Regardless, you'd probably get suspended for using too much CPU before you use too much resources with the Unlimited plans.
Since it is obvious that you will be CPU intensive if you use 500 gb of traffic monthly....