I was watching the prices on these lately, and they kept creeping up (most were now at ~170-200 US).
Then this showed up, I grabbed one, one left:
Refurbished Quanta LB4M 10GB Uplink Switch Single Power Supply Discounted
Then this showed up, I grabbed one, one left:
Refurbished Quanta LB4M 10GB Uplink Switch Single Power Supply Discounted