You can buy cheap chips to put into the printer if you want to risk it - search for "drum reset refill chip".
The drum reset refill chip is not even a chip, it's a 56 ohm resistor that acts like a fuse. The drum has two resistors in parallel, one with very low resistance and one that's like 200 000 ohm. If the printer sees a high current when you turn on the printer, the firmware thinks it's a new drum and resets the page counter. After a short while the 100 ohm resistor burns (quite literally), and from that point on the firmware will only see a low current when you turn on the printer, and it will not reset the page counter.
So the drum reset refill chip lets you connect the two pads where the printer applies the current with a resistor like the one on a new drum. You can buy a 56 ohm resistor yourself to achieve the same effect.
It's literally a resistor and some plastic, only usable once, and they sell it to you for $10, which makes it much more of a scam than anything printer manufacturers do.