At this point, I'm sure he does get discounts. He has 3 OORs, that's 3/4 the price of a Zahl HM1. Some companies allow you to keep their units but impose no selling restrictions, right? Probably what happened. Goldensound previously was raving about the AHB2, the Serene being one of the best for Susvara etc. etc., and sold those off instead of 2 OORs lol. Anyway, I don't have a horse in the Zahl HM1 race, don't really care if he gets discounts. I'm set on my system components and will call it a day once my Bliss arrives.
The OORs are not mine, I've not purchased them. I have a review in the works and after that's done they'll be heading back to Ferrum. (It's taken far longer than expected due to various disruptions this past year, luckily now resolved, but as a result I've hardly been able to get many videos out in recent months.)
I can't sell what isn't mine, hence I sold my AHB2/Serene instead.
The reason there are three here is because Ferrum sent me a unit prior to the release of the product to do some beta-testing. I found a couple minor issues with it, which they then rectified and sent a new revision over.
I found another small problem, and again they made a new revision and sent another unit, which was flawless and that's what is being shipped to customers and is what I'm reviewing. Hence there's three here at present. Makes sense to ship them all back at once rather than separately.
In terms of keeping review units, generally speaking most companies won't let you keep stuff unless it's not particularly high end.
For a $200 IEM or $400 DAC for example, it's usually not worth the company's time/money to pay for return shipping, refurbish it, then sell it at a lower price due to being open box. So for that type of stuff they usually just let you keep it.
Whilst some might immediately think 'well that's an obvious incentive for you to be nice to them/their product!'...trust me...I REALLY do not need more DACs/amps sitting on the shelf XD. Pretty sure
@Currawong mentioned he has several drawers full of DAPs and stuff at this point.
I don't sell review units. If I'm allowed to keep something I'll keep it and if possible use it as a comparison/point of reference in future vids.
I feel that maybe giving stuff to friends free of charge might be ok as it's of no financial benefit to me and it's far better that it would get used and enjoyed by someone rather than just sitting on a shelf, but I'd be curious to hear other's thoughts on that.
But if it's anything more than $500 or so, the company usually wants it back. Sometimes that's immediately, sometimes they'll ask if it can just stay with you until they need to send it elsewhere.