I don't think any of the sub-$25 tubulars have an anti-puncture belt, which means they're like the tires of yore. Most of the cheap types (all I buy) have been pretty much the same, perhaps even made in the same factory in Thailand. I do enjoy them and ride them on my "exercise" runs that are closer to home, but I ride clinchers when heading off to the hills.
http://www.probikekit.com/display.php?code=Y1190 includes shipping