Expect to pay between $500 and $2,000+ depending on condition and rarity. M1 units are often the most affordable ($500–$800).

Because it is no longer in production, buying an ERS-7 today involves navigating the vintage collectors' market, where prices and conditions vary wildly based on color and model revision. 1. Identify Your Model & Color

The AIBO uses an "Energy Station" to recharge. A small vertical pole helps its camera find the station.

The ERS-7 requires a specific Sony Memory Stick (Purple or Pink) to function. MIND 3 is highly recommended as it allows the AIBO to speak in English/Japanese/Spanish instead of just robotic tones.

Available in Pearl White and Pearl Black. Improved motor tuning for more fluid movement.

, especially in Champagne Brown, can exceed $2,000 due to their limited production.

There were three major hardware revisions (M1, M2, and M3), each released with corresponding "MIND" software.

The , first released in 2003, is considered one of the most iconic and advanced consumer robots ever made. It was the last model produced before Sony temporarily halted its robotics division in 2006.