Yes, samplers are the way to start with Upton. It took a friend serving me tea in Minneapolis to learn about Upton Tea, even though I already lived in Massachusetts at the time. I ordered several samplers of unfamiliar things that sounded good, then proceeded to order two tins of Irish breakfast because they offered two different blends and I already knew Irish breakfast was my favorite.
Only to discover I don't like Upton's Irish breakfast (which I'm sure is superior to the various brands I've bought in grocery stores). Duh. My hopes are now pinned on Barry's, which I've heard is good.
Upton's has loads of marvelous teas. I drink less tea than most tea-drinkers. It would easily take far more than my lifetime to discover which ones best suit my tastes (and under what conditions), even if I'd started 50 years ago instead of 5.
The samplers also make for fabulous, personalized, super low-cost presents. In addition to the label telling how long to brew it for, and at what temperature, they also print the recipient's name on the label.