Hello,
I have a printer MFC-L3750 CDW BROTHER I still have new cartridges bought I have you, is there a printer cheaper than this model or my cartridges would be compatible?
Hello Carole ChatGPT can give you very good information. I searched for the TN-243 multipack. Here are the results.
Best regards Thomas
The Brother TN-243 multipack toner (or the individual variants e.g. Brother TN-243BK for black, Brother TN-243C for cyan, Brother TN-243M for magenta, Brother TN-243Y for yellow) is compatible with the following selected Brother printer models:
Compatible models - Brother DCP-L3510CDW - according to manufacturer list.  - Brother DCP-L3517CDW - also mentioned.  - Brother DCP-L3550CDW - also listed.  - Brother HL-L3210CW - compatible for colour printer series.  - Brother HL-L3230CDW - also listed.  - Brother HL-L3270CDW - also named.  - Brother MFC-L3710CW - also listed.  - Brother MFC-L3730CDN - also listed.  - Brother MFC-L3750CDW - also listed.  - Brother MFC-L3770CDW - likewise. 
Notes - These are colour laser multifunctional devices or colour printers from Brother in which this toner series is used. - If your printer model does not appear in this list, we recommend checking the manual or the Brother website to see whether "TN-243" (or the variant for colour: TN-243C/M/Y or black: TN-243BK) is specified as a consumable.