Not sure if they sell a variety pack or not, you could certainly hit any of the big box stores and buy yourself a variety of flavors to try...it's kinda pricey that way though. The last couple times we have run out, I ordered the 50count box from Amazon for about $28. Added bonus is waaaay less trash. The small 3 pack and larger 20 pack (Costco) come with a a rediculous amount of packaging. http://www.amazon.com/Starbucks-Ready-Colombia-Coffee-count/dp/B00438XVGU
In the amazon reviews several people complained that they are nearing the expiration date (one box I got was three months before the date, another 6 months) but I can't imagine how the product could really go bad. We have drank it years after the use by date without any trouble.
I haven't seen a Via sampler or variety pack, which is too bad. I wish they had blueberry flavored coffee too. Can't figure out how I'd get my Keurig to run in the back country so I can enjoy my Green Mountain Blueberry coffee.