A beginner's electric bass can be found for under $200. Even top companies such as Fender offer models under $400. Consider buying used or renting at first. To hear your bass, you'll need an amp of course, and you can find one used for around $200.
Estimated cost: $500

• Electric bass guitar: $100 - $500
• Amp: $200
• Strings, strap, cords: $60