UPDATE:
A week after the inverter was returned I received most of the money back. Seemingly they decided to keep $43.27 and 100% of the sales tax associated with the order.
It appears they charged their own tax rate of ~6.45% based on the math, equating to $438.15.
So, after all that, I’ve currently been shorted ~$481. Which equates to a 10% shortage, or “restocking fee” if you look at it that way.
The thread is locked. I hope you all have a better experience!
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View attachment 164133