And you do have to CALIBRATE the TV so what you’re looking at is actually accurate.
If you can’t afford the hardware to do this properly, then hire a professional calibrator. Many TVs now have CMS (Color management systems) built-in, and quite a few of them actually work properly. This should allow you to achieve a staggeringly high degree of color accuracy on the display as long as you feed it an output from the computer properly with an output card and test your workflow so you know you’re getting the right signals and seeing what you’re supposed to be seeing.
A professional broadcast monitor is just a fancy high-performing TV, usually with different features. There are some pretty crappy “broadcast monitors” out there, and some stunningly exceptional consumer TVs available too. Your reference should be the best possible display you can afford, and whether it has a “professional” sticker on it or not is irrelevant. What matters is the accuracy of the image it produces, nothing more.
Regards,
Chris