As I was leaving San Jose last month I stopped at the Cafe Britt shop in the airport. I bought 2 bags of ground coffee and 3 bags of chocolate covered nuts. They were running a special and if you bought 5 items you got a 6th item free.
Total cost was $30 ($5 per bag).
On the Cafe Britt website they want $8.95 for the same bag of coffee plus another $8.95 for shipping.
http://www.cafebritt.com/eStore/index.c ... 8&chkd=yes
I believe the prices at Mas X Menos might be even cheaper than the airport store.