I also wonder at the need for separate valves or pinch valves when the peristaltic type pump is already always pinching the tubing in at least one spot all of the time.
I know normally that a shopping question / answer is not standard practice on this site.....but..... the source for a reasonably priced pump may very well be of interest to many readers here.
You can get this sweet little 12V peristaltic pump from AdaFruit for less than half what was listed on the original question for a solenoid valve. Even less if you end up needing a whole bunch of them.
The pump rund through a geared reducer off the motor so it can produce a lot of torque. Running current is listed at 300mA from a 12V supply.