Interesting conversation going on here, I would like to add my opinion.
As a ecotech product user since the release of the original vortech I can say I for one am disappointed in how this issue is being handled.
I don't think it is about "asking for free products" @mfinn its in how they have advertised their product. I am in the market for a new return pump, and if I go off just their and all distributors of their products websites,
it stated that these pumps were compatible with the battery backup. They later added that you needed an accessory, which until yesterday was NOT available.
To me this isn't a question on the price of the cable, its really in the fact that they were misleading stating it was able to be run off the battery backup in the beginning, when in reality it was not. Im happy with their products for the most part, but feel that the people who bought the vectra at release should have been given the cable free, while those of us (myself) that don't have it yet, should purchase it as we now know you need the cable to use it.