Any of us can give you an opinion about what we think is a fair price. However, if we're not willing to actually do the job for the price we say, it doesn't mean much. At the end of the day, the only prices that matter are from people who are actually willing to do the job. If you get 5 proposals and that's all you will get, then those are your options. Once you get the proposals, you can accept one or try to negotiate. At some point, you're going to have to accept a builder's best and final offer or you walk away and do nothing.I'll admit I'm disappointed you can't even offer a little bit on the price point. I gave a pretty detailed dump of what the pool will have.
That being said, I think that the price is high.
However, since I'm not willing or able to give you a better price to do the same job, my opinion isn't going to do you much good.
It's not like you can go to the builder and say "there's a random person on the internet who says that they think you should do the job for $70,000.00" and they're going to care.