GoingGear.com
Enlightened
The likelihood of response depends on the reason for the closure. If this was a business reason, then the people are still there waiting to take care of problems. But if it was personal reasons, they likely are not still there and won't be able to respond. The fact that they had the sale says that it was foreseeable but the incompleteness and perhaps suddenness of the sale suggests they didn't have control of their remaining time.
No message of any kind, even on social media, is pretty weird. I wonder if it was a financial thing and they had all their assets seized. I used to work for a retailer that would sometimes buy inventory after companies were seized. The banks would just shut them down with all their inventory and equipment still there. One day they were open, the next day closed and they usually weren't allowed to do any "Going out of Business" sales or anything like that. Liquidators or auctioneers would come in after the banks took control to get rid of inventory and equipment.
Total speculation, of course. I hope that didn't happen to them, because they were a good company. I ordered from Lighthound quite a few times before starting Going Gear, and still a few times after. I wonder what happened to those guys...