I spent only on the domain and hosting.
And the worst part is the content was not even too original. I was a noob so I did not know anything then.
It was a free template, i just took info from other sites, edited a bit and pasted.
Lucky for me I SEO-d it well and got first page SERPS for lots of stuff.
It was aviationearth.com (It has changed a lot since i sold it)