Just wanted to provide some seller feedback for the SB community.
Short Version: Honest seller. Would definitely buy from again.
Longer Version: I purchased 2 Oceanic branded PPS transmitters and an Oceanic Atom 2.0. Product was shipped quickly, packaged safely, and arrived with all promised materials, and even included fresh batteries for everything. Upon arrival, I attached the transmitters to regulators and tanks to make sure everything was working. Unfortunately, one of the transmitters was not functioning. I swapped batteries and tried a different computer to isolate the problem. When I confirmed it was the transmitter, I contacted the seller and he was willing to refund for the transmitter. Since I would still need another transmitter, I suggested returning the transmitter to Oceanic for their transmitter service. Seller refunded the cost for the service. I'm a happy customer.