I had 4 root canals/crowns done several years ago. 2 of them needed elongations. We spread the work out over 2 or 3 calendar years to max out my dental insurance so I can't remember exactly how much it all was. I feel like it was about $5K out of pocket, and that was with what most dentists call "really good!" dental insurance coverage.
But...within two years, two of those teeth ended up needing to be pulled anyway - one because the tooth broke off at the base (it was one of the teeth an elongation was done on) and the other because a massive cavity somehow developed under the crown that was missed by my dentist in my regular checkups until it was too late (it was the other tooth an elongation was done on - coincidence?). So the root canals/elongations/crowns were just a HUGE waste of money. And on one of the other teeth, they put the crown on crooked and it also developed a cavity underneath as a result after just a year, so the crown had to be removed, the cavity dealt with, and a new crown put on. At least they caught that one in time! But it still cost me an extra pretty penny for that second crown - because it was so soon after the first crown, my insurance wouldn't cover that work at all.
I've decided denistry is more an art than a science
I am in the process of getting an implant for the first tooth that I had extracted, and a second implant will follow for the other one. The bone graft/implant is not covered by my insurance, although the crown for it is partially. Out of pocket the implants will end up running me about $3K each. I could have chosen to have a bridge put in, which my insurance would have covered nicely, but after researching I decided the implant was the better long-term solution. I can't help thinking, though, how much cheaper it would have been for me to just have had the stupid teeth extracted and gone on straight to the implant.
So, personally, as an extreme dental chair veteran, I'd say you made the right choice, esp. if there was a chance an elongation would have been involved! And I've found healing up from an extraction is not a big deal (although I admit that is with a GREAT oral surgeon who does a bang-up job stitching things up!).