Please note that you must have an active Content Autopilot plan/submission for the site(s) you are requesting links for 

Here are the 6 Options:

 

Links with guaranteed minimum 2k/mo visitors/traffic, which makes them the best option in terms of effectiveness:

DR 20-34… $187

DR 35-49… $247

DR 50-80… $350

These options may or may not have a lot of traffic going to them, but they are healthy, and the relevancy is within the proper parameters:

DA 20… $100

DA 30… $130

DA 40… $210