Therefore the traffic count in bytes will be the total of all the file sizes downloaded. Seemingly generous limits of 200MB to 500MB per month mean very little to many sites. Surveys report that the average number of pages per site is around 60 - 80 pages, so presuming many visitors view one third of a sites pages and the average total bytes per page happened to be 135KB, a popular site soon uses up their traffic allocation. Take into account that many pages are viewed two or three times as visitors navigate back and forth. Local cache does not guarantee that the server will not respond to repeated viewings either.
Most visitors come into the site directly to areas within, via search engines and links.
So the traffic count is very unpredictable and can only be judged over a considerable length of time. Also, do not rely on page counters and their logs for calculating traffic totals. Page counter scripts can miss a lot of records on some servers. A lot of this and a little of that, and a lot that and a little of this, and so forth. Sometimes I see offers that are real traps that will quickly lead people and companies into having to increase outlays very quickly.