Check out my DIY Hexapod Robot that you can build for just under $150 using off the shelf parts! (Assuming you have a 3D printer and an old Android phone to use
ZeroBug Is a 3D-Printed Micro Servo Hexapod Powered by a Raspberry Pi and STM32 - Hackster.io
Amazon.com: Geeek Club Robot Building Kit - ANT001 Hexapod Tank - STEM Robot Kit for Kids - Educational Science Toys - DIY Robotics Set - Printed Circuit Board Engineering Toys - Build
ArcBotics Hexy The Hexapod v1.1 Updated Open Source Arduino DIY Robot Kit with 19 Servos : Amazon.com.au: Toys & Games
This 3D Printed Arduino-Based Hexapod Robot Can Bust a Move! - Make: