Hey Max...
I wanted to add that I think those amps are great for you to have, wish I had had an arsenal like that when I was your age! Just do yourself a favour and be careful with the SPLs in your bedroom, that was how I started hurting my ears. Even a 30w amp can put out some decent volume... :evil4:
On the ethics side of the issue, well, we've all participated in things that may make us feel a little uneasy after the fact when others have expressed their opinion when they've been told. I can recall a number of times where I have rushed up to my folks (when they were around) and told them I did this or that or got myself involved in something - all very happy for myself - only to have an older or detached mind tell me that that was perhaps not so great. Or they simply expressed a sense of underwhelming, which left you with the impression that you did something wrong or perhaps done not the wisest thing, though you can't see it as that at all. I doubt there's anyone here who is righteous and virtuous enough to have gone through life without some of those in their closet.
One point though: GC did not cancel ALL the orders made under this error, though they could have caught a great number more if they had bothered to. They didn't: they drew the line and let some through. So to them it must be just another set of circumstances where their QC systems have failed them and the decision must have been made to accept a degree of cost to them and learn, hopefully, from the experience. If the issue had been such an outrage to them, as the affected vendor, they could have stopped a lot more orders than they did, and even tried to get back some of the orders that may have been in transit when the error was discovered.
I'm no moral crusader and I refuse to be a hypocrite (when I have a closet full of line-ball moral decisions like this one), and go 'tsk, tsk' at others, when I know I probably would have bitten at the opportunity if I had been in the market for an amp or some gear myself.