Dental advice?

I've had 3 crowns done by Rocio Roman Porcayo DDS. Excellent work at about 1/3 of the cost in the US. Office: 755-554-4417. Cell: 044-755-556-0068 e-mail: xrocio@hotmail.com

I don't doubt that dentists such as Rocio Roman do great work at very reasonable prices. Assuming, for a minute, that US and Canadian prices are similar, then 1/3 of the proposed $1710 bill would be $569. If my dental plan would pay $855, then I could still save about $286 by having the work done in Zihua.
I guess the question is: do I take a chance that I can get the work done for around $570C (8000 pesos) in Zihua, or spend the $855 here at home? I doubt any Zihua dentist would hazard to provide an estimate via e-mail.....and my own dentist wouldn't be thrilled providing x-rays so I could "shop around".
Given that my dental plan pays 50%, I think I've probably answered my own question.