It gets really hard to find that random little bolt you need, but Honda wants $9+ for a steel bolt that is about an inch long. I mostly get my parts from other riders who are parting out track bikes. Plus, it's cheaper to buy a used shock and have it rebuilt than it is to buy a brand new shock, stuff like that. And the fact that I can't order parts from a shop in Japan without having a Japanese title, and I still haven't managed to get that done, what the fuck am I waiting for.

Where ever I can get it cheapest. And with a very limited aftermarket, that's not very many places.

I get the basics, oil and oil filter from the dealer.
Tires I get online and brake pads I got online, actually no I got those from the dealer too.
I haven't done much else to the bike but if I do or would, most likely will come from online.