Termites

I have one isolated spot where termites did some damage. According to Terminex the damage is old. Likely done 5-10 years ago. An inspection of the crawl space did not find any other problem areas. Thank God.

Terminex wants $500 for the first whopper of a treatment. Months 2 - 12 will cost $114 per month. After the first 12 months the monthly charge drops to $34.

Is this a fair price, or otherwise?

Thanks in advance.

I should have posted to Home and Garden. Sorry. Mods please move if you see fit.