I have purchased a lot from vevor. And aliexpress in general. I oddly pride myself at being good at figuring out terrible instructions, with no misteps...I eventually got it perfect, but I definitely had to undo a few bolts and switch things around to figure it out. And looking back at the instructions afterwards, indeed there was no way for me to tell.
Additionally, although I like the construction, it is atypical how the base shelf plate and caster supports get installed. It is this part of assembly that is particularly unintuitive and awkward.
Personally, my favorite part is how modular it is. The top is a completely flat plate. No welds for brackets or anything on the bottom. Top plate is 3mm thick plus or minus 10 microns.
The packaging is really terrible. I got lucky mine was not damaged.