Any current fireworks discounts or free shipping deals before the holidays?

I know it’s not a typical “shopping” category, but some online fireworks stores actually do promo codes or free delivery events around New Year’s or July 4th. I’m planning a small party this year, so I’d love to grab a few boxes without overpaying for shipping or handling.
If anyone knows of a store that has legit discounts or offers, please drop a link. Bonus if they also carry smoke or gender reveal fireworks!