When to give up?

I am scheduled for a retreatment of a root canal next month.  I have been going over the fees for this retreatment and upcoming crown...yikes!  I wonder if it's even worth it!  Is there a point when you just say enough is enough and have the tooth pulled???

[scottma]

the most important factor to determine whether the tooth is salvable or not depends on the clinical judgement of the treating dentists. Seeing a competent endodontist and restorative dentist is advised.

[sara_eagle]

My retreatment is scheduled with an endodontist.  I'm just freaking out about the fees!!!  I have dental insurance through my employer and through my husband's employer as well but it's still extremely expensive!  

[turkee23]

yes it is expensive but you want to save the teeth if possible. pulling a tooth will leave you needing a bridge and if just left a hold then the surrounding teeth will start to move in order to accomodate for the missing tooth.