I'm looking for some good, name brand 4ga copper wire for a project I'm planning out.

I'd rather not have to order a 50' spool of my favorite brand as I only need a few feet of 4ga right now.

Red or Blue insulation would be preferred, but as long as it's super flexible and 100% copper, it really doesn't matter what color it is.
I'd like the pure copper because I may need to solder it to some custom terminals & the cca wire doesn't like to be soldered

I have plenty of 8ga & 1/0ga but I'd like to have a bit of 4ga for what I have in mind.

If you have more than a few feet, I might be interested in it too.
Open to trading some of my led goodies, but I might be able to crack open my piggy bank to find a few bucks if needed. $1 to $1,000,000.00est.

Let me know what you've got