Quick Take
A used industrial robotics cobot arm is a good deal only if the controller, reach, and payload match your workcell. These four units span $1,999.99 to $7,999.99, so the first filter is budget. After that, decide whether an included controller matters, and check whether the title states a reach or payload you can use. The price-bar table gives a fast visual read on where each unit sits; the decision matrix then matches each arm to a buyer priority.
Listed-Price Comparison
| Listed price | Price bar | Unit | Key detail |
|---|---|---|---|
| USD 1,999.99 | FANUC S-10 Robot Arm & Controller | Arm with controller; Japan; used | |
| USD 2,000.00 | NACHi MZ07 with TCFD Controller | Arm with TCFD controller; Japan | |
| USD 2,759.17 | ABB IRB140 M2000 | Refurbished by Bow Robotics in 2018; single unit | |
| USD 7,999.99 | Staubli TX2-60L | 920 mm reach; 4.5 kg payload; France |
Decision Matrix
| If your priority is... | Best fit | Why |
|---|---|---|
| Lowest listed price plus an included controller | FANUC S-10 Robot Arm & Controller | Includes arm and controller; low end of the price range |
| A Japanese arm with a TCFD controller | NACHi MZ07 with TCFD Controller | Second-lowest listed price; controller included |
| A named refurbishment event | ABB IRB140 M2000 | Bow Robotics refurbishment; middle price point |
| Stated reach and payload | Staubli TX2-60L | Title states reach and payload up front |
Product Notes
FANUC S-10 Robot Arm & Controller

The FANUC S-10 is the low-price entry point in the group, with the arm and controller included. It is a used 6-axis arm made in Japan, and the design notes emphasize an over-engineered build for durability. The unit is dated 1994, so this is an older control platform than the ABB unit's 2018 refurbishment. If you want a 6-axis arm with a controller and are comfortable with a 1994-era control architecture, this is the one to start with. Because it carries the lowest listed price, it leaves more of your spending plan available for controller integration and any workcell attachments you already own.
NACHi MZ07 Robot Arm with TCFD Controller

The NACHi MZ07 pairs a 6-axis articulated arm with a TCFD controller and is made in Japan. It sits just below the ABB on price, so it works as a second Japanese option if the FANUC's 1994 platform is not appealing. The known weak point is stated directly: the tip sensor is partially detached. That condition point should be part of any decision to use the robot's sensing functions. If you can plan around that sensor issue, the TCFD controller and Japan origin make this a compact 6-axis alternative in the same price neighborhood as the FANUC.
ABB IRB140 M2000

This ABB unit is the one with a specific refurbishment story: it was refurbished by Bow Robotics in 2018 and is sold as a single unit. It sits in the middle of the price range, making it a moderate step above the two Japanese arms on cost. The unit is identified as IRB140 M2000, so you know exactly which model you are dealing with. The condition is still used, but the 2018 refurbishment is a concrete part of the unit's history. If you want a known intervention point between the low-price used arms and the higher-priced Staubli, this is the middle path.
Staubli TX2-60L

The Staubli TX2-60L is the highest-priced unit, and it is also the one with the clearest reach position: the title says 920 mm reach and 4.5 kg payload. It is a 6-axis articulated arm from France, and it is tested and working after being pulled from a working environment. The sale includes only items shown in the photos. If your application needs that specific reach and payload, the Staubli is the only unit in this group that calls them out in its title. That makes it a direct match for a workcell defined by those numbers.
Final Recommendation by Use Case
Start with the FANUC S-10 if the low end of the price spread and an included controller are your gate criteria, but plan for an older 1994 control architecture. Choose the NACHi MZ07 with TCFD controller if you want another Japanese arm with a controller and are willing to account for the partially detached tip sensor. Pick the ABB IRB140 M2000 when a named refurbishment matters more than being at the very bottom of the price range. And choose the Staubli TX2-60L when reach and payload are the binding constraints; it is the unit that states both numbers in the title and carries the highest listed price.