I had my cab seats recovered by a domestic upholsterer who charged me £300 ( I supplied the material) The cushions and head rests were completed by my wife and daughter. It took them a couple of weekends,not working flat out, and a very nice job. We reused the backing that sticks to the velcro and the reeded effect is achieved by stitching through. When I find the pictures I will post them.
My experience that any halfway decent domestic upholsterer will do the job without the expense of going to the 'specialists'.