While deciding on $699 Costco deal I found this one on Amazon.
It's ships from and sold by Acer Recertified Store.
It's also backed by Amazon Renewed Guarantee:
This product is eligible for a replacement or refund within 90 days of receipt if you are not satisfied. Get quick support for claims and free troubleshooting via Amazon Customer Service. The guarantee is in conjunction with Amazon's standard return policy. Learn more about the Amazon Renewed Guarantee
Not the title nor description says it's a x34 or x34p, but the Q&A and reviews confirmed it's a x34p. I don't mind to save $100 + tax on a renewed one, especially I can return it to Amazon in 90(or 120?) days!