Newegg offers the Rosewill Brother TN450-Compatible Black Toner Cartridge 2-Pack, model no. RTCG-TN450V2, for $20.98 with free shipping. At $10.49 per cartridge, that's $12 below the lowest total price per cartridge we could find and the lowest total price per-cartridge price we've seen without a rebate. It yields up to 2,600 pages.
Newegg takes 30% off a selection of Rosewill Brother-compatible toners via coupon code "EMCPGPF94". Plus, all orders receive free shipping. With prices starting at $10.49 after discount, that's tied with our mention from August as the best percent-off discount we've seen on Rosewill toner from Newegg in the past year. (For further comparison, we saw a coupon for 25% off in December.)