The Spinball Wizard 2 wheel machine DOES NOT have transport wheels. It only weighs 58 pounds, so I guess they felt they were not necessary for that machine.
I'm not sure how to explain the pitch charts any better than they already are laid out other than to say to set up a curving pitch, see what it actually does, and all the other pitches charted will make sense. Keep in mind that there is a set of pitches that represent a left handed thrower and another set for a right handed pitcher throwing the same pitches (ball curves right vs. left). Also good to know, the sum of the speed of both wheels divided by 2 will give you the speed of the pitch (i.e. top wheel set at 75 and bottom wheel set at 105 in a straight up and down vertical position produces a 90 MPH fastball - 105+75=180 ... 180/2=90).
Regular baseballs work fine, but are not quite as accurate as dimple balls due to the raised seams and how they contact the wheels. Also, eventually, due to the high pressure being exerted on the glued-on leather, regular baseballs will eventually be ruined by all wheeled pitching machines.
We have sales every month but cannot advertise discounts on the Spinball/Rawlings machines due to agreements with the manufacturer. To see the actual price, you need to add the machine to the shopping cart. Our biggest sale vs. our smallest one is usually about $10-30 on these machines, depending on the machine.
The old Spinball Wizard 3 wheel without the wheel guards, reinforced metal and transport wheels weighed about 118 pounds. The new Spinball 3 wheel machine (2021 and later) weighs closer to 160 pounds. Once at the park, it can be wheeled onto the field via the transport wheels. Not sure what to tell you about getting it into your Highlander other than to do it with another person.