Pricing
| Starter | Economy | Deluxe | Premium |
|---|---|---|---|
| 200 US$ /Year | 330 US$ /Year | 475 US$ /Year | 620 US$ /Year |
| 10 GB Space | 20 GB Space | 40 GB Space | 80 GB Space |
| 20 Journals | 40 Journals | 80 Journals | 160 Journals |
| 15,000 PDF Papers | 30,000 PDF Papers | 60,000 PDF Papers | 120,000 PDF Papers |