I bought a pack of 500 pieces of 0.5 mm mechanical pencil lead, I use it so much.

That's how I feel :A: Why is it lead is so fragile that we blow through it so fast?
I use 0.7 ;u; I should probably use a smaller size lead

I like 0.3 actually, but it's hard to find and pencils for it aren't as cheap as the more standard, 0.7, 0.5, 0.9, etc.

Have you tried Office Max?

I've been there, but I didn't think places like that would really sell 0.3 stuff, if that's what you're talking about. I guess I've got to check next time.

I assumed they would ;u; idk though.

I would check it out on their website before you go waste gas.