By general rule, if you didn't order it with PostScript, it doesn't have PostScript.

Since PostScript is an Adobe language, they charge a lot for it. Most low-end to middle-end printers don't even have a PostScript option.
(There's always an exception of course, and one exception is HP. Some of their middle-end LaserJets have shipped with a "generic" PostScript support. It isn't actually Adobe's, and doesn't always work as you'd expect, but it's something. I don't know how they get around the licensing issues. But then again we have GNU software can can create PS & PDFs, so....)
(And thinking some more about HP's generic PS... the point of using PS is so printed output looks the same on all devices, whether it's an Epson, a Tektronix/Xerox, an HP, etc. And if the generic PostScript isn't always compliant, that's an issue. But I suppose those that really care have the $$ to buy a printer with "proper" PS from Adobe.)