The average American has a 20-ton / year carbon footprint. Offsetting 20 tons per year has a cost that ranges depending on what service you use. I've seen estimates of $6-10/ton - $20/month is $12/ton.
Edit: for the average american footprint, you can easily find the stat that the US emitted 5.268 GtCO2 in 2018. There are 327.16 million people in the US. From that I get more like 16 tons/year per person, so 20 is out of date. Of course, we have to get to zero with sequestration on top of that.
Edit: for the average american footprint, you can easily find the stat that the US emitted 5.268 GtCO2 in 2018. There are 327.16 million people in the US. From that I get more like 16 tons/year per person, so 20 is out of date. Of course, we have to get to zero with sequestration on top of that.