You can't tell that it isn't a 500 gram firework. It's an insanely good deal

Best 9 shot 500 gram for the price is Rifle Range Ahead at Some Dude's in Lehi. Insanely loud and a massive firework. The shots fill the sky. 19.99.
Don't waste your money on 3 inch shells. The legal limit is 500 grams per cake and you might as well get the two inch for 1/4 the price. You won't notice a difference because there isn't one except cost.

Best non 9 shot 500 gram is Venom Strike at Some Dudes for $45 or if you care about duration and some pretty good explosions then get 2 Minute Block Party.

Seriously though. The $6 fireworks I bought and shot off yesterday were by far the best bang for the buck I've seen. Shoot two at once and it rivaled all but the best of my 500 gram aerials.

No one watching my display could tell me which were the $6 ones and which were the $45 ones.

I shot off over 140 aerials yesterday and this next year I might just buy the cheaper 500 gram 9 shots and the $6 fireworks.