Even a lump sum payment of the equivalent of $100/month for 10 years ($12k - vastly more favorable) left to compound at 2% yields 12k *1.02^10 = $14628. If you want to figure the periodic payment future value you can figure a bit less. But you're off by over 100%. Meanwhile lets ignore the fact that 2% is garbage in the first place. You might nudge out inflation...

I'm honestly curious where those numbers came from, but it's a lot closer to 2% per month, which works out to a wholly unreasonable 1.02^12 = ~27%/yr. But if you can swing that, yah. Easy retirement on $100/mth.