Looking at the response headers from your own site, everything is being served up from Fastly edge servers. Why wouldn't you serve your own site from your own infrastructure?
The reason I even bothered to look at the response headers is because I'm a huge fan of Fastly and wanted to see what you guys were sending back to compare. Turns out they look identical because they are Fastly headers and Fastly edge servers.
And maybe have a look at Fastly pricing: https://www.fastly.com/pricing $0.0075 / 10,000 requests seems much more reasonable than your $0.05 / 1,000 requests...