How much for 20 Reddit upvotes?

If I'm getting this right It's good to have your link to stick on reddit and it needs 12+ upvotes to became do-follow.

How much will this cost?

I have roughly calculated that sticking 100 links (upvoting it each with 15 accounts) will take 250 hours every year and that's a lot! I would rather work those 250h and make myself 3000$ plus you cant even compare doing meaningful vs braindead reddit activities.

So, I gotta know how much do people charge for 20 upvotes and does it really help?