So, it's an enterprisey company, for sure, but for just Technopedia API access, I think that the rates are fairly approachable -- in the order of a couple hundred bucks a month maybe.
That said, I no longer work there, and companies often tinker with prices, and to boot, they were reengineering the API that I originally POCed for the company, so it could be substantially cheaper now (or substantially more expensive -- but the goal was to make it more accessible, so I'd guess cheaper.)
If you're actually interested in giving it a spin, shoot me an email, and I can probably put you in touch with someone willing to let you do a test-drive. My email's in my profile.