Good read, thanx. Just want to make a point here:

How do I spot overselling? It can be very difficult to spot overselling, depending on how severe it is. Generally if you see a host offering high packages for next to nothing, they're overselling. If you see fairly good packages at insanely low prices (around $1/month) - they're overselling.

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Hosts may be overselling even if they charge $10mo, it all depends on the amount of resources offered in the plans, can you please five any figures how to estimate the degree of overselling, say what's the normal price for 1 GB of disk space and 10GB of bandwidth?