Actually, the Accuquartz caliber usually sells for less than the average 214/218. It has not yet been appreciated for what it really is and you can still snag some really good deals but prices have been increasing a little since last year.
The Accuquartz caliber uses the quartz crystal to keep the tuning fork vibrating at the correct frequency. Unlike other Accutron calibers, you don't regulate the watch by moving the little weights on the tuning fork but by changing the position(s) of tiny screws on the resistor module of the quartz crystal. The tuning fork weights may have to be moved but only to bring the tuning fork into sync with the quartz crystal. IIRC, Bulova indicated accuracy of 1-3 minutes/year when properly regulated. I have one that varies less than one minute/year - fantastic for 40+ year old technology!
What your father experienced is, unfortunately, what a lot of folks are told by unknowing watchmakers. No, Bulova no longer supports these watches with parts or service but there are still competant, trained service folks out there and parts are still pletiful - both NOS and used.