hmmm... try kmart.. I know, dodgy, but I bought a pair a few months back and they were fantasic, until I kicked the **** out of a car chassis (actually recommended by my boss) and they fell apart... but I bought another pair and they're still great
Unfotunately, they're no good around chemicals for long periods
colarado sell awesome steal capped boots. i have a pair and they are tough as. only problem is if you are wearing them for long periods of time you may find they get quite heavy on your feet. im used to them now.. but it took me a few weeks..