$100 · Yamaha FB-01 Synthesizer

Yamaha FB-01 Synthesizer Sounds awesome. 8 note polyphonic and can be edited via a free computer editor. There is the infamous solid bass sound in it, worth it for this alone. This is similar to the "Lately Bass" of the TX81Z https://www.youtube.com/watch?v=NRk6dOdr4_g