Getting back to the original topic (a certain resin caster would not return a customer's emails)...
The problem with posting comments about aftermarket companies here on the forum is this: Most aftermarket companies are small operations, many of them are literally one-man operations. They are not "professional" manufacturers, and as such, it's not realistic to expect "professional" business practices from them.
Many times customer "A" will order from aftermarket guy "X" and get his order shipped quickly, so customer "A" sees aftermarket guy "X" as a great source. Then customer "B" orders from aftermarket guy "X," but because "X" got sick, or got swamped with orders, or his basement flooded, or whatever, "X" is slow getting customer "B's" order out... so customer "B" posts here about what a shyster "X" is.
"A" had a good experience with "X"... "B" had a bad experience with "X."
So is "X" a good aftermarket supplier... or a crook?
See the problem?
Posting your aftermarket experiences here generally causes nothing but trouble. If you have an issue with an aftermarket supplier, try to deal with that supplier directly.