Are you still happy with the Aliexpress DRO now that you have had it for a few months? I looked at the link that you posted and the DRO package looks pretty good, price is most attractive after looking at others. I have no experience with a DRO, but I am considering the purchase of one for my Grizzly G0755.You might try looking at Aliexpress for a DRO.
I bought my 3 axis from them for a really descent price and it works great for my needs.Here is link http://www.aliexpress.com/item/free...dout-with-3-pcs-linear-scales/1524501216.html
There are many others to look at