I have some Milspec silver plated copper (extruded) wire with Teflon insulation left over from projects - It's literally used in jets and satellites and is made for tough environments - this makes great speaker wire or power cord wire for DIY projects. Hell, I'm even considering wiring my 20 amp audiophile outlet in this stuff, it's good! I have:
10 awg in Black
Sold out for Now8 awg in Red
Sold out for NowPlus shipping (usually just $5.80 for Priority Mail)
I have a lot of the 8 awg, which is actually really hard to find at this low of a price. I'm running out of the 10 awg as I made many a power cable and speaker cable for folks, but I can pull out some decent lengths for 10' (or less) speaker runs still. Hit me up with what you need, and I'll measure it off and make sure I have enough.