Not going to argue the toss....but really!!!

ive had my ws packs over four years.
The pack cost me less than £100,i have replaced the pump once
which is a 70psi pump like the micro trolleys cost less than £25
and battery once a year less than £20.
I use my pack around 5 hours a day
Incidently I don't use a trolley for it,i pick up put down as required.
not only has it been cheaper even full it is lighter than using a trolley
with a 25 litre barrel on it and far quicker and easier to move about.
ive had a freedom trolley and used a pack from a car,it is easier
with a pack and the chap is part time weekends only and doesn't know
if this will become a fulltime occupation.
So in the circumstances I would say paying out for the micro trolley is
a waste of money.