- IT Support
In-House vs. Outsourced IT Support: Which Is Right for Your Business?
3 Mar, 2026






£151.06 inc. VAT
AI-generated summary
At £125.88 ex-VAT for an **original** Brother TN-821XLBK cartridge, this is one of those “pay for consistency” buys. If you’re using a compatible Brother laser in a business setting and you want predictable print quality (sharp text, stable black density) without tinkering or playing roulette with third-party chips/compatibility, it makes sense. The “XLB” style pricing usually reflects better page yield, so if your machine actually gets used steadily, the cost per page can look far more reasonable than the upfront sticker suggests.
That said, I’d only buy this if you’ve confirmed the exact model compatibility and you’re genuinely committed to OEM. If you print sporadically or mainly need occasional documents, the cash hit isn’t great compared with lower-cost alternatives that may be good enough for drafts and internal paperwork. Also, if your organisation already has decent service/consumables contracts or you’ve found reliable non-OEM toner that plays nicely with your fleet, you might not be getting enough “real-world” value from paying OEM prices.
**Who should buy it:** offices printing regularly where quality and hassle-free operation matter more than squeezing every penny. **Who shouldn’t:** low-volume teams, or buyers who already have strong cheaper toner options and don’t need OEM-level reliability.

Brother Supplies
Brother TN421BK - Black - original - toner cartridge - for Brother DCP-L8410CDW, DCP-L8410CDWT, HL-L8360CDWMT, MFC-L8690CDW

Xerox
Xerox - Black - original - printer imaging kit - for Xerox C310/DNI, C310/DNIM, C310V_DNI, C310V_DNIUK, C315/DNI, C315V_DNI, C315V_DNIUK

Xerox
Everyday - High capacity - mono - compatible - toner cartridge (alternative for: Brother TN2420)

Xerox
Everyday - Black - compatible - box - toner cartridge (alternative for: Brother TN-3600XXL) - Green World Alliance return programme - for Brother DCP-L5510DW, HL-L6410DN, MFC-L6710DW, MFC-L6910DN