| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| kindle free science fiction books | 0.28 | 0.9 | 7765 | 27 |
| free science fiction and fantasy kindle books | 0.44 | 0.7 | 5455 | 57 |
| free kindle books science fiction and romance | 1.66 | 0.5 | 2862 | 35 |
| free kindle books science fiction fantasy | 0.52 | 0.8 | 5112 | 66 |
| free science fiction books on kindle | 1.26 | 0.9 | 3635 | 20 |
| free kindle sci fi and fantasy books | 1.42 | 0.4 | 7497 | 94 |
| free kindle books sci fi fantasy | 0.09 | 0.6 | 4849 | 66 |
| kindle free sci fi fantasy books series | 0.52 | 0.4 | 1593 | 23 |
| free kindle science fiction | 0.06 | 0.4 | 4110 | 76 |
| science fiction kindle books | 0.06 | 0.3 | 7697 | 55 |
| amazon free kindle science fiction | 0.1 | 0.8 | 560 | 59 |
