It took me six months to get my Lyra Clavis back from them. When I sent it in, the backlog was 12-14 weeks. I wasn't that concerned about the timeframe, but the lack of communication, or updates. I started getting concerned that my cart may have been lost, or some other misfortune. I was never contacted until the cartridge was finished.
However, getting it back and using it for the first time, it was well worth it.
Until there is an alternative, we'll live with it.
Note to Peter: Find someone who can make a few calls/emails a day. Let customers know how their stuff is doing.