Hello. Keep in mind that the TEE is a "procedure" and may be expensive since you are a cash customer. I had one done years ago when the Cardiologist needed to confirm my valve (uni or bi) but the surgeon never requested one. The surgeon preferred a cardio echo. I agree with others. Get it done sooner than later. The valve calcification and stenosis can accelerate and you could start to have cardiac syncope which is dangerous and leads to other injuries. All depends upon when it happens and what you are doing. It happened to me right after exercise and led to an ER visit with facial sutures. Not fun. I'm your age and also agree with others that you should go with the mechanical valve and be done with this issue for the rest of your life. There are no side effects with Warfarin, and it's very inexpensive. I doubt that you will want to go thru this again. And a comment on your cost. With the newer high deductible insurance plans here in the US, we are paying in deductible close to what your mentioning as your total cost. My current plan has a $17k deductible. Yes, it's crazy. And, I just got a bill the other day from my surgery (in Feb 2021) that I owe another $4k. Good luck and get 'er done!amazing on tee