Starbucks triple venti cinammon dolce latter, non-fat, no whip: $4.87
a standard sized envelope: $0.02
a first class stamp: $0.41
additional manual handling postage to cover a non-machinable surcharge due to the rigidity of the envelope: $0.17

Wow -- that's like $5.47 just to mail one chip!

;)

Truth be told, you could probably grab a few extra sleeves when getting coffee... My starbucks has out a small basket of them...you pick yours and put it around your cup yourself. I'm sure they wouldn't miss a few extras...