$30 for a 24-hour "subscription" (presumably cheaper if you're a med student or doc, but I didn't bother to check). Am I the only one who wonders whether this

$30 for a 24-hour "subscription" (presumably cheaper if you're a med student or doc, but I didn't bother to check). Am I the only one who wonders whether this access model is sustainable? How many people would actually pay such a fee, and just to read about a single patient, not a major study.