Randy, there are options for half that much. Give SPI (Southern Polyurethanes Inc.) a call (706-781-2220) they should be able to give you the name of a local supplier. If not, they ship direct to you (sadly, that would take 4 days). Don't be surprised if Barry (the owner) answers your call. I don't get a discount or paid for mentioning SPI, I just find the company to be one of those rare ones that cares about what you are doing, not just how much you are going to spend. Here are the current prices from their website (
https://www.southernpolyurethanes.com/pricing):
#4201-1 Black Black Single Stage Gallon 4:1 Uses 2100 series activators $253.22
#2201-1 Flat Black Single Stage Gallon 4:1, 6:1 or 8:1 Uses 2100 series activators $299.95
#2104-4 Very Slow Activator - Quart $48.40
#895-1 Very Slow Urethane Grade Reducers Gallon $66.51
Where I am in Florida is cooler than where you are in Arizona but without the humidity I suspect the Very Slow products would be the right match.
The black may not match what you are spraying because there's no hint of brown or blue in it. It's just pure black. The gloss in the Flat Black is adjustable: "4:1 gives you an egg-shell finish. 6:1 mix you will have a nice flat black (most popular choice). 8:1 mix and you will have black with zero shine leaning to a slight gray scale but it's only noticeable if painted on a panel next to the other mix ratios of Matte Black."