I don’t know exactly, my mate bought it, but if I recall rightly, it was about the same as you saved. Mined sweet fuck all though, so a 50w tube heater may have been a better bet…

We have a battery bank for our solar that was getting too cold in the freezing weather, and we used a little mining rig (that’s designed and marketed as a heater miner, to preempt the “it’s not designed for that” comments), and while it found exactly fuck all of value, it did keep them warm enough to keep our power on

Author’s website, which, after playing a little text game, takes you to a better place to buy it from than Bezos’s fetid swamp - https://curiousvideogamemachines.com/