I came across a
$50 rebate deal on ACR EPIRBs and PLBs from
Landfall Navigation. This brings their price on the Res-Q-Link down to about $210.
I believe this rebate promotion is from the manufacturer ACR so you might get a better net price elsewhere, I just wanted to put the word out on the rebate. It's all good!
No affiliation, though I have been a satisfied customer with Landfall.
update:
here is the rebate form directly from ACR.