This great Lego R2 comes with a sign and an R2D2 minifigure. I personally liked a variant with a height of 50 cm, Mindstorms control and real sensors, but it would hardly stay at a price of just under 180 EUR. Lego has also built in a few small specials, so you can extend the third middle leg in and out again and thus it can be set up on three and on two legs. The small saw and the Camputer arm are hidden in the stomach. You can also move the two little blue arms. Snip from YouTube:
Presenting the iconic R2-D2 as you've never seen him before. Everyone's favorite droid from the Star Wars galaxy is now part of the ultimate collector series and features fantastic detailing, such as rectractable third leg, front panels that open to reveal a universal computer interface arm and a circular saw, rotating head and 2 fold-out front spacecraft linkage control arms. With the included fact plaque and mini R2-D2 figure, this diminutive model is the perfect addition to your Star Wars collection. Measures over 12 "(31cm) high and 7" (18cm) wide.