Why aren't we allowed to charge a Jew interest but we're allowed to charge a non-Jew?
There are many Jewish weekly or monthly publications (e.g. magazines) that offer the following deal: Individual copies of the magazine are priced at say, $5 each. But, if you "subscribe" by paying in ...
If magazine subscriptions are ribbis, are bus tokens, postage stamps, and other pay-in-advance items also ribbis?
This answer to another ribbis question indicates that deals of the form "subscribe and save X% over news-stand prices" are ribbis and thus forbidden. Does this principle apply to other items you pay ...