Here is the new model, the ACR 2921:
ACR ResQLink 400 Personal Locator Beacon w/o Display [2921]
It may or may not be available yet, but you could phone that place and ask. Also try these others:
Landfall Navigation,
The GPS Store, and
Gps4us. If you can get that one before your next dive trip, I think it's worth the $20 extra. If not, the old model is still a good unit - for diving, hiking, traveling. I went hiking with my kids, granddaughter, and even a great granddaughter last week, and you can be sure I had mine. It was spring break and the trails were crowded, but if someone had stepped on a rattlesnake, I wasn't going to wait for a message to be run to a ranger.
I have one of these. It is needlessly bulky, and not designed well....easy to drop the closure ring when opening the canister.
For $110 including shipping, I think it's great. It may not be a custom fit, but for that price - it was no problem. Yeah, the closure ring might get dropped in the ocean if I have an emergency need to open & use, but that's but a minor irritation. It can be replaced.
The aluminum McMurdo Dive Canister is almost as bulky, much heavier to carry to the boat & back (I rented one once), cost $300, and you'd lose the lid at sea in an emergency as well - except it may have been discontinued. I don't see any available now.
Oh, I don't care which PLB or canister y'all get. Just do. I was happy to contribute to the fund to find Cam, and I am rooting for the search - but we see stories of drifting divers all the time. Some survive. Y'all have no excuse for getting lost at land or sea without one now as you know better.
To me, cost means nothing if it mitigates risk to near zero and keeps me alive.
True, but the costs do discourage some or we'd all have one from our first dive trip. So we're getting the costs down some.
BTW, the 5 or 6 battery service is only a little over $100 if you shop around. Chickenfeed.