Sorry to hear you got caught by the Rainsoft scam, sorry, "unique marketing methods".
"If you are in the Florida area you can contact the Florida Attorney Generals office for complaints against Rainsoft. Rainsoft has an agreement with them to perform service or be fined."
"... Rainsoft ... [other makers omitted] have all gone out of their way to produce unique parts that can only be obtained through their authorized dealers. This usually makes them more difficult and more expensive to purchase."
I guess from your remarks that you're not interested in this
"How to replace your Rainsoft valve"
"Rainsoft New Timer Motor 24 volts for more recent models, PN 17493 Older models use the 24 volt CW190-1 or CW190-2. Also for 120 volt we have the WG190-1 or WG190-2 $49.95"