If you source links from both paper.club and topserp.pro, 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 18,586 domains — 17% of paper.club and 51% of topserp.pro. As a Jaccard index (shared ÷ combined) the catalogs are 14% identical, so about 86% of the combined pool is exclusive to one side.
Unique inventory
- 93,666 domains on paper.club only (83% of its catalog).
- 17,622 domains on topserp.pro only (49% of its catalog).
Where they overlap, who's cheaper?
For the 18,586 shared domains priced on both platforms, comparing the cheapest listing on each:
On identical inventory, paper.club is the cheaper source 11% of the time (median $168 vs $78 for the same sites). The average absolute price gap per shared domain is $180 — always price-check a placement across platforms before buying.
Quality (Domain Rating)
| DR band | On both | paper.club only | topserp.pro only |
|---|---|---|---|
| DR 80–100 | 1% | 0% | 2% |
| DR 60–79 | 7% | 3% | 6% |
| DR 40–59 | 22% | 10% | 22% |
| DR 20–39 | 42% | 21% | 36% |
| DR 0–19 | 28% | 65% | 35% |
Median DR: 30 shared, 10 paper.club-exclusive, 29 topserp.pro-exclusive.
Geography
| # | paper.club | domains | topserp.pro | domains |
|---|---|---|---|---|
| 1 | France | 19,142 | France | 11,171 |
| 2 | Germany | 9,847 | United States | 5,233 |
| 3 | United States | 6,326 | India | 2,504 |
| 4 | Italy | 5,267 | Germany | 1,269 |
| 5 | Netherlands | 4,654 | Italy | 1,193 |
| 6 | DK | 3,784 | United Kingdom | 896 |
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.