So far I've made over £20,000 from Adsense, but it's taken a while and earnings have dropped recently.
Now I mainly focus on product creation, some days a product will pull in over £3,000 - and some days they make nothing. Thankfully the days that a product doesn't sell are far and few between. The most I've made in a single day is over £4,000 - but that's only happened one time so far.
I also do web design, development and SEO, the most expensive project I've worked on was worth £64,000 and the least expensive was £250 (way, way back).