Ask Loren Perry directly. Email him using the Contact Us button off his website
http://www.goldmm.com/
Loren is a good fellow to talk to, it may take a day or two to get back to you due to his workload. You can ask him is he is planning on doing the elevators and give a WAG as to when they might be available. He may not even have them planned - but it there is enough demand he may add them to his product line.
BTW: Loren has just added product photos to his website. You can see what you are getting