In the beginning, my budget for this sport was set about $2 to 4k tops; which I theorectically was thinking to include bike, gear and insurance.
I believe, as of today, I've spent about $25k in total. I no longer blink at the cost of anything that I think that is needed.
What are you priorities if you had $25k to spend? (poll coming up)
Edit: 25k was not spent all at once. It started out with only bike, insurance and gear. Later on, it was new tires, brake locks, alarm, then a bit more gear, leathers, waterproof gear and so on. Everyday I would find that I needed that "one thing more" to make my ride better.