There are times that I'd like to browse the OS X App Store from my iPad - to get info for future reference. But when I try, I get a message that I have to use a Mac.
Is there a way around this?
As @jaume has mentioned, you can use the Mac App Store Preview on Apple's Website to browser apps from the Mac App Store. The same exists for iOS apps and is labeled as iTunes Preview.
As you will have already noticed, the search box on Apple's website is not very helpful when searching for Apps. The best alternative I can think of uses a google query. In the Google search box type:
...which uses the URL: