Although the Pantah was very expensive (about the same price as Ducati's 900s), its success as a racer in the TT Formula 2 class made it a very impressive package.
Ducati decided to built a road/touring bike off of the Pantah and the TL was born. Many of these were used by Italian Police, but it never really captured the puplic's imagination. It wasn't officially imported to the UK until Moto Vecchia offered them at a reasonable £1995. Even then they didn't sell very well, (I've never seen one), and I seem to remember that the price eventually came down to £1599. (Although I may be wrong - it was a long time ago!).
At the time (c. 1983/4?) I had my BMW and had done a bit of European touring on it, but I was aware that it was a big clunky and hefty, and thought the Ducati would make a lighter and more modern replacement. The BMW was worth about £800 - 900 at the time, so it wouldn't have taken finding a lot of money to get a new TL.
For a number of reasons that I can't quite remember, I never ended up buying a TL, and have never seen one since. It's fair to say that it got 'mixed reviews' in the press, so it's probably for the best that I didn't buy one.
Here's a video of one: YouTube.
And some details: MCS.