This never happens.
We're overstocked on some sizes of 6UL, so we're offering a rebate. Buy a set of 6ULs and we'll give you a $100 gift card to spend at Flyin' Miata. No expiry, no limitations.
What's the catch? Well, it's only on certain sizes and colors - but they do cover all generations of Miata and sizes from mild to wild. Some of these sizes aren't available anywhere else right now. And the big catch is that it's while supplies last, so when they're gone they're gone.
Some of these fit other applications. Those NC wheels, for example, have a 5x114.3 bolt pattern so they fit a huge range of cars. Yeah, your Fox body wants a set.
https://www.flyinmiata.com/wheel_rebate.html
NA/NB wheels:
15x9 Bronze
15x10 Charcoal
NC wheels:
17x8 Bronze
17x8 Charcoal
17x8 Tungsten
17x9 Tungsten
17x10 Tungsten
ND wheels:
17x9 Beryllium LE
17x9 Bronze