What a rip off, don't do it  

I get mine from office works, one of these held upside down works great for me, done a fair few mylar removals now, even full playfields with this stuff... (though you may need a couple of cans for a full playfield)

http://www.officeworks.com.au/shop/officeworks/insystem-pressurised-air-duster-150ml-ra100150?searchTerm=compressed%20air