Thanks for your response AKMiner. There are 2 online retailers offering the Z1+ for $4200, includes PSU and delivery, i.e. Asicminermarket and Estrahash. If you can charge the same and also allow me to add trade insurance i will gladly buy this product from you now
There are a number of Alibaba suppliers that will allow trade assurance if you pay with credit card or a checking account. That is how I purchased my Z1 originally. I paid a fair price, but not amazingly low, but at least I had the assurance that I would be reimbursed if something went wrong.
I am extremely hesitant with any company or website that doesn't have an established reputation or some sort of 3rd party verification that I trust.
Like anything else, it is all about how much risk you are willing to take.