Slowy, I bought an aluminium jack off eBay for around $300. It's low profile, double piston, etc. eBay only shows max 60 days of shopping history now so I don't have the link, but a quick search revealed literally dozens. Mine's made in China but shipped out of Sydney or Newcastle I think.
It's similar to
this but has individual castors at the front and seems a bit longer.
Cheers
Paul