I'm afraid so!
I did a bit of searching but previous posts were mainly about lower cost options; skates, modified carts, etc and actually I'm interested in the forums views on the pinball-specific carts that seem to be anywhere between $300 and $450.
So thoughts one:
Penguin - http://penguinamusement.com/details.php?pid=penguin_dolly
gets decent reviews, but it out of stock (and has been for some time).
Then, are the two on ebay any good?
Or there is this one thats more expensive ($449)
Welcome the members' thoughts on these sort of carts - I know they are more expensive but keen to get something that lasts and easy to move pins around with minimum effort