Based on some reviews, this is a sub-par router, especially in terms of reliability and 2.4GHz performance. Perhaps they're just trying to liquidate their stock of it and make a few bucks while they're at it.
No, I'm aware it's still going to be $18. But you wouldn't try to argue about the point if you ordered on Amazon or whatever and picked multiple items and the shipping was still $13 lol.
Wait, is shipping that expensive in the US? As an individual in Germany I pay 5,50€ for DHL (2kg, tracking, insurance up to 500€). As a business customer it's even cheaper.