From Amazon "The HEYMIX Aluminum single monitor stand fits most screens 13" to 32" in size and 1.5kg to 9kg in weight with quick Release joint installation with VESA plate 75x75mm or 100x100mm mounting holes. 2-Ways mounts to the back of your desk (10mm - 80mm ) via a heavy-duty C-clamp or optional grommet mount (10mm -60mm)."
I bought one of these in a recent deal for around $40. They are really solid, delivery was within days so it's AU stock, and I've had no issues. I reached out to the seller for a deal as I needed more, they were super responsive and now I have 3.
Based on previous oZbargain deals, it looks like this is a historical low for Boxing Day.
See similar recent deal at $39.19
Description bulled from previous deal
* Compatibility: The HEYMIX single monitor mount fits most screens 13"(33cm) to 32"(81cm) in size and 1.5kg to 9kg in weight with VESA 75x75mm or 100x100mm mounting holes. (While in our Manual we suggest best experience to use screen 27''within 6.5kgs as recommened.)
* Full Articulation: The HEYMIX VESA monitor mount offers -45°/90°tilt, ±90° swivel, 360° rotation. Monitor can be placed in portrait or landscape shape.
* Gas Spring System: The single monitor stand built with gas springs, providing a smooth adjustment motion that perfectly balances the weight of the monitor.
* Cable Management: RemCable Management: Removable cable clamps keep the table top organized, providing a neat table top and stylish appearance for the most comfortable working environment.ovable cable clamps keep the table top organized, providing a neat table top and stylish appearance for the most comfortable working environment.
* Easy Install: Mounts to the back of your desk (10mm to 85mm thick) via a heavy-duty C-clamp or optional grommet mount.