Unfortunately not much being done in 16" but there is the RPF1 in 16x8, 4x100, a bit over $200 each, flow formed....
A bunch of BMWs race on 18x8x9,10 flow formed Apex Arc 8 wheels, I had 12 of them in 10" wide for my last race car project, less than $200 each when I bough them.
I have ten 13.4 lb, 15x9, (there are a couple of others a bit lighter but I like these more for a few reasons and designed for raceing) flow formed, I have pounded over the curbs on a bit lighter weigh set for 8 sessions without issue, $1240 shipped for all ten wheels.
15x8 are 12.8 lbs, $119 each...
Lots of great options for very low cost if take the time to switch to 4x100.
I was hoping to see more 16's come out with the launch of the ND MX-5 going back to that bolt pattern but the industry just does not support it well but still some great tires available, overall better choices in 15 and 16 than 17" tires which just get to tall when going wider.