If you source links from both insert.link and paper.club, one number decides how much you overwrite yourself: how much do their site databases overlap? We matched both catalogs on the normalized domain (lowercased, no scheme or www) inside our Backlink Pricing dataset.
The overlap
The two databases share 11,237 domains — 36% of insert.link and 10% of paper.club. As a Jaccard index (shared ÷ combined) the catalogs are 9% identical, so about 91% of the combined pool is exclusive to one side.
Unique inventory
- 19,578 domains on insert.link only (64% of its catalog).
- 101,015 domains on paper.club only (90% of its catalog).
Where they overlap, who's cheaper?
For the 11,237 shared domains priced on both platforms, comparing the cheapest listing on each:
On identical inventory, insert.link is the cheaper source 78% of the time (median $210 vs $345 for the same sites). The average absolute price gap per shared domain is $232 — always price-check a placement across platforms before buying.
Quality (Domain Rating)
| DR band | On both | insert.link only | paper.club only |
|---|---|---|---|
| DR 80–100 | 1% | 1% | 0% |
| DR 60–79 | 12% | 6% | 3% |
| DR 40–59 | 33% | 22% | 10% |
| DR 20–39 | 37% | 35% | 23% |
| DR 0–19 | 17% | 36% | 64% |
Median DR: 37 shared, 28 insert.link-exclusive, 11 paper.club-exclusive.
Geography
| # | insert.link | domains | paper.club | domains |
|---|---|---|---|---|
| 1 | United States | 4,899 | France | 19,142 |
| 2 | India | 3,348 | Germany | 9,847 |
| 3 | France | 1,815 | United States | 6,326 |
| 4 | Poland | 1,713 | Italy | 5,267 |
| 5 | Netherlands | 1,536 | Netherlands | 4,654 |
| 6 | Germany | 1,031 | DK | 3,784 |
FAQ
Does "on both" mean the same seller?
Not necessarily — a domain can be listed on both marketplaces by the same publisher or different resellers. What's shared is the placement opportunity, which is what you dedupe before buying.
Is a bigger database always better?
No. Overlap, price spread, DR/traffic quality and geography decide value for a specific campaign. Comparing databases is how you buy the same link for less and find inventory a single platform can't offer.