Many colors available at $13.99 including the gradients. As of this post all colors other than black or white are $13.99 of the HT-PLA. Many colors of the HT-PLA GF are also $13.99.

This is their “High temperature PLA” which can withstand higher temperatures than standard PLA. You don’t need a hardened nozzle to print with it.

I asked their CS if the HT-PLA (non-GF) is AMS safe last month and this was their reply “Yup! All of our spools have hardened edges to spin great in AMS like systems!”