Whoa man, hold up here.
I know how it feels when you're just starting out and looking for advice and a bunch of people tell you you're doing it wrong, and it feels like you're being judged and attacked, but you're not. I promise.
And as for this statement here, you are just plain mistaken, my friend! I myself have had several experiences purchasing from the really nice people here on TPT, and any time it arrived subpar, the seller was super kind and considerate and re-sent the product free of charge!
Just chill out, tuck away the chip on your shoulder, and it'll all work for the best :]
Man I hope so just as with the dead moss in my tank ill keep tryin. THANKS!