If ever in need for a second opinion https://www.facebook.com/DoctorSocorroDental is good with very frugal prices, married to an expat and speaks english. It's who I use.
You are right FBH, they want $1500 a year to extend contract and 2 years up front, Expire's nov. 2017 maybe by then some banks and notorios will come up with a better bargain.