I totally agree, that site has some high prices for their stuff. I understand the cost of shipping things from Aus will raise the prices but holy crap $120 for 4 pieces of metal to doll up your wheels? I'll pass thank you. Also not impressed with the decision to blast off in her RR with less...
They are definitely able to be ordered, I have one on order since last December. Still waiting on a VIN to be generated then they can give a build/delivery estimate. If you have at least 6 months to go you'd be in a great position if you order one anytime now. Good Luck!
This site has some great videos that show the process pretty clearly and the kits look to be good quality even if they could use a little larger gauge wire.
https://www.f150leds.com/collections/2019-2022-ranger-leds/products/2019-2022-ford-ranger-raptor-style-extreme-amber-led-grill-kit