It's puzzling why you would say that and then include stats that show its a blatant misrepresentation. That month (February, not last month) was clearly an anomaly and pretty close to what you earned all the other months combined.
I'm interested in the domain. High $xxx is extremely high. If you decide to bring that price down to earth, please let me know.
I love me some good typos, but what happened in Feb? I would say your monthly average is 5 times 12 months a year - cost of renewal = net $50 * 2 years I think $100 and maybe a little more is fair. Not sure if want to risk pissing off users of 4chan though...