Uh.... we don't charge S&H again on back ordered Command boards. For those that bought the Sound Kits in this first batch and are waiting on Cruise Commanders and Cruise M Boards, when they come in (Oct / Nov) , we just bill you for the boards and we ship them out Priority Mail for free. That's what the initial S&H was for. We tried to communicate that when we sent out the invoices.
Everyone has their "price", that's fine. I get it. Still, we have to maintain staff (Secretary, Technical, Shipping and Receiving) , We have to Warranty boards, buy all the little things that go into the kits as well as finance the purchase of stock so these will be available in the long run. None of that is free. But I get it, $20 is $20. Too bad $20 an engine keeps you from enjoying your hobby and upgrading your old command engines. Better find a cheaper hobby...
In reality, sales have been brisk. There are many customers out there not posting here that are buying up all the first batch sound Kits and ordering the Command kits that will be coming in later this year. TMCC will not die. I saw that it could have if no one stepped in, so here I am. Thankless job, but someone had to do it. 
Most of all, enjoy your hobby. We will do all we can to make that a reality.
