https://www.amazon.com/Daves-Gourmet-Scorpion-Pepper-Sauce/dp/B004QO5E0M/
Probably the best Dave's Sauce IMO. I don't think you'll find any real artisan stuff on Amazon under $10, so you might have to go with the bigger labels.
One that I'm surprised wasn't listed here is Dave's Gourmet Scorpion sauce
https://www.amazon.com/Daves-Gourmet-Scorpion-Pepper-Sauce/dp/B004QO5E0M/