B1G1 on Pace 6 Plus Razor. Updated it on the Pace 4 deal, but worth a separate post of its own, I guess. Limit 3 per order. Not sure if a separate order can be placed for a total of 4 handles and 8 cartridges for $4.
Edit: To make it interesting, after adding two razor handles, I removed the one that showed $1.99 from the cart, leaving the free one remaining. It continued to process the order for free. Not sure if it would get cancelled.
https://www.dorcousa.co