The best Keyboards and Synths gear under $20 (2026)

The strongest Keyboards and Synths gear you can buy for under $20 right now, ranked by real closed-sale prices — not guesses, not asking prices. Updated August 2026; the order shifts as the market does.

Also: under $50 · under $100

1. 1
   
   Buchla “H” Mounting Bracket

   $19.99
   eBay ↗Sold comps →
2. 2
   
   Behringer 902 Voltage Controlled Amplifier

   $19.99
   eBay ↗Sold comps →
3. 3
   
   Yamaha DGX-620

   $19.95
   eBay ↗Sold comps →
4. 4
   
   Korg PS-1

   $19.95
   eBay ↗Sold comps →
5. 5
   
   Casio LK-135, LK-230, LK-265, LK-170, LK-280

   $19.5
   eBay ↗Sold comps →
6. 6
   
   ARP / Solina String ensemble

   $19.03
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7. 7
   
   Casio PT-87

   $18.95
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8. 8
   
   Casio WK-1630

   $18.95
   eBay ↗Sold comps →
9. 9
   
   Akai LunchKey 25 MK3

   $18.95
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10. 10
    
    Casio LK-100, LK-110, LK-42, LK-45, LK-92TV

    $18.5
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11. 11
    
    Yamaha PSR-180, PSR-240, PSR-260, PSR-270, PSR-500

    $18.42
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12. 12
    
    Yamaha DGX-202, PSR-172, PSR-E303, YPT-300, EZ-20

    $18.25
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13. 13
    
    Casio WK-110, WK-200, WK-220

    $18.25
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14. 14
    
    Yamaha PSR-260

    $17.95
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15. 15
    
    Casio WK-1800, CTK-480, CTK-511, CTK-533, CTK-591

    $17.25
    eBay ↗Sold comps →
16. 16
    
    Yamaha PSR-6, PSR-75

    $17.25
    eBay ↗Sold comps →
17. 17
    
    Casio CT-360, CT-370, CT-655

    $16.95
    eBay ↗Sold comps →
18. 18
    
    Akai S3000XL

    $16.83
    eBay ↗Sold comps →
19. 19
    
    Yamaha PF85

    $16.25
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20. 20
    
    Yamaha PSR-240, PSR-260

    $16.25
    eBay ↗Sold comps →
21. 21
    
    E-MU Systems Proteus 2000

    $15.99
    eBay ↗Sold comps →
22. 22
    
    Yamaha YPR-7

    $15.95
    eBay ↗Sold comps →
23. 23
    
    Akai MPK 25, APC40 MKI

    $15.95
    eBay ↗Sold comps →
24. 24
    
    Yamaha PSR-15, PSR-21

    $15.25
    eBay ↗Sold comps →
25. 25
    
    Moog Moog Power adapter for DFAM, mother 32, subharmonicon, spectravox, labyrinth

    $15
    eBay ↗Sold comps →
26. 26
    
    Night Owl Modular Korg SQ-1 mount for Arturia Rackbrute 3U/6U

    $15
    eBay ↗Sold comps →
27. 27
    
    Akai MPK 25

    $14.95
    eBay ↗Sold comps →
28. 28
    
    Farfisa Compact

    $14.31
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29. 29
    
    Yamaha PSR-260, DSR-1000

    $14.25
    eBay ↗Sold comps →
30. 30
    
    Casio LK-100, LK-110,, CTK-720, CTK-2200

    $14.25
    eBay ↗Sold comps →
31. 31
    
    Akai S6000

    $14.03
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32. 32
    
    Roland White Button Cap (016H044) for Juno-60, JSQ-60, MSQ-100, EP-6060, EP-11, etc

    $13.95
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33. 33
    
    Yamaha Replacement SHARP/BLACK Key (Yamaha C61K6 Keybeds) (VL57060R/VA850500) for SY22/35/55, DX11, DS55, S30, AN1X, CS6X, V50, W7, YS200, and Korg 707

    $12.95
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34. 34
    
    Intellijel Pouch Eurorack Cables & Accessories Bag

    $12.91
    eBay ↗Sold comps →
35. 35
    
    Boss BP-1 Service Notes

    $12
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36. 36
    
    H/D90 Rhythm Board

    $9.99
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37. 37
    
    Sherpa Modular M3 Thumb Screws

    $8
    eBay ↗Sold comps →
38. 38
    
    Korg Original PolySix key

    $6.7
    eBay ↗Sold comps →
39. 39
    
    Synth Board

    $4.99
    eBay ↗Sold comps →
40. 40
    
    Synth Chips

    $2.49
    eBay ↗Sold comps →

Values are informational estimates from real sales data. JunkPal may earn a commission when you buy through eBay links, at no extra cost to you.