| Used (Like New) | Medium Stone Gray Duplo Siren Brick with Red Button and Blue Lights Lights not working. Have tried changing batteries, but don't have the correct tools. | 1 | US $0.25 | US $5.75 | Wild Bricks (741) Shipping US $5.50 Minimum Order US $10.00 |
| Used (Good) | Pearl Light Gray Duplo Siren Brick with Red Button and Blue Lights | 1 | US $2.58 | US $16.05 | YvisWuehlkiste (31) Shipping US $13.47 |
| Used (Good) | Medium Stone Gray Duplo Siren Brick with Red Button and Blue Lights | 1 | US $2.76 | US $8.12 | L-MO Bricks (224) Shipping ~US $5.36 Minimum Order US $5.00 |
| Used (Good) | Medium Stone Gray Duplo Siren Brick with Red Button and Blue Lights good condition, minor playwear possible | 1 | US $2.82 | US $22.22 | SaarBricks (83) Shipping US $19.40 |
| Used (Good) | Medium Stone Gray Duplo Siren Brick with Red Button and Blue Lights THE SOUND IS WORKING BUT NOT THE LIGHTS | 1 | US $2.89 | US $9.54 | FAVRSKOV (388) Shipping US $6.65 Minimum Order US $5.78 |
| Used (Good) | Pearl Light Gray Duplo Siren Brick with Red Button and Blue Lights Works fine. Battery a bit weak. | 1 | US $2.99 | US $17.00 | LV Bricks (155) Shipping US $14.01 |
| Used (Good) | Pearl Light Gray Duplo Siren Brick with Red Button and Blue Lights | 1 | US $3.08 | US $35.42 | Brams Bouwstenen (4) Shipping US $32.34 Minimum Order US $5.39 |
| Used (Good) | Pearl Light Gray Duplo Siren Brick with Red Button and Blue Lights | 1 | US $3.15 | US $16.62 | YvisWuehlkiste (31) Shipping US $13.47 |
| Used (Good) | Medium Stone Gray Duplo Siren Brick with Red Button and Blue Lights | 1 | US $3.21 | US $16.09 | FrisianBricks (178) Shipping US $12.88 |
| Used (Good) | Pearl Light Gray Duplo Siren Brick with Red Button and Blue Lights Excellent Condition | 1 | US $3.33 | US $13.86 | Bricktastics (1189) Shipping US $10.53 |
| Used (Good) | Medium Stone Gray Duplo Siren Brick with Red Button and Blue Lights Lights and sound still work. Small brown scuff on one of the lights. | 1 | US $3.49 | US $8.98 | Shippin Bricks (405) Shipping ~US $5.49 |
| Used (Good) | Pearl Light Gray Duplo Siren Brick with Red Button and Blue Lights Light and siren both working. | 1 | US $3.50 | US $14.03 | Bricktastics (1189) Shipping US $10.53 |
| Used (Good) | Medium Stone Gray Duplo Siren Brick with Red Button and Blue Lights | 2 | US $4.31 | US $6.46 | EshopOrlova - Go Build! (764) Shipping US $2.15 |
| Used (Good) | Medium Stone Gray Duplo Siren Brick with Red Button and Blue Lights all checked and working | 1 | US $4.75 | US $11.68 | HenBrixx (231) Shipping US $6.93 |
| Used (Good) | Pearl Light Gray Duplo Siren Brick with Red Button and Blue Lights | 2 | US $5.15 | US $11.62 | Brickmarkt (338) Shipping US $6.47 |
| Used (Good) | Pearl Light Gray Duplo Siren Brick with Red Button and Blue Lights all checked and working; tiny bite marks on one side | 1 | US $5.24 | US $12.17 | HenBrixx (231) Shipping US $6.93 |
| Used (Good) | Medium Stone Gray Duplo Siren Brick with Red Button and Blue Lights ● BATTERY IS VERY LOW ● | 2 | US $6.63 | US $11.61 | HyperSync (790) Shipping US $4.98 |
| Used (Good) | Pearl Light Gray Duplo Siren Brick with Red Button and Blue Lights BOTH THE LIGHT AND THE SOUND IS WORKING | 1 | US $9.39 | US $16.04 | FAVRSKOV (388) Shipping US $6.65 |