Recently purchased this scaffolding for a project and have decided not to keep it.  Worked for what I needed and is in prefect condition.  Got it from Tractor Supply.  Price was right until you add freight.  Here's the description from Tractor Supply:

This is the world's most stable 12 foot multifunction tower! Made by stacking two of ScaffoldMart's patented multifunction units with extra-long 23 inch siderail cuffs. All other manufacturers use 18 inch cuffs, providing significantly less stability, especially when stacked. It includes the patented 3-4 Guardrail System which allows you to remove one side for unimpeded access to work surfaces. This guardrail features square fittings where it connects to the scaffold, providing a more precise and stable connection than conventional designs. Additionally, it's equipped with a set of four Ideal-Angle Outriggers which are the only two position 18 inch outriggers on the market. These have a one-of-a-kind capability that allow the use of four outriggers even in close proximity to a wall. Twelve feet indicates this tower's maximum allowable standing height, it is important to note that any time one is standing at 72 inches or above guardrails and outriggers are required equipment. Each 6' unit contains four wheels, providing a total of eight - four for the lower unit and four for the outriggers.

• Simply the Worlds Best 12 ft Multifunction Tower

• Features ScaffoldMarts patented 6 ft Multifunction Unit w/ Reversible Siderail

• 3-4 Guardrail System provides best-in-class safety and access

• Unique Ideal-Angle Outriggers make safety and stability easier

Includes two complete 6 ft. Multifunction Units, maximum standing height of twelve feet. 3-4 Guardrail System included for standing heights of 72 in. or higher. Ideal-Angle Outriggers stabilize the tower, required when standing at 72 inches or higher.

Asking $800 obo.