As one of its daily deals, Groupon offers a $30 Moleskine + Milk credit for $15, $60 credit for $30, or a $90 credit for $45. That's at least $15 off and the best credit offer we've seen from Moleskine + Milk, which specializes in custom photo books and albums. Note that it's limited to three per person, although only one can be used per order. The credit can be used towards shipping, which starts at $4.99. The credit expires on August 7. Deal ends February 7.