I think it is rare, or at the least less common. However, "rare" does NOT equal "valuable". That only applies to brands with strong collector interest, which Taurus has little of. Now if it was a S&W model 66 with a 3" barrel we're talking some bucks.
I paid $269+tax for mine about 12 years ago. It was made in 1989, has the 3"bbl like that one, but mine has a square butt frame. The one you posted looks to be a round butt. I have not seen one for sale in a while, but I wouldn't have a problem paying around $400 or so for one in excellent condition.
Whenever someone says they have a "rare" firearm for sale, my interest starts to drop to Zero. Since firearms are for the most part all hand fitted, that means each firearm is a one of a kind. That makes it rare. When the sales pitch has to include the word rare, the seller is trying to get more money than it's actually worth. If the item was truly that rare and valuable, they'd be selling it through an Auction house.