Holy cow the shipping on that pellet sampler is steep. $35 plus $16 shipping might kill it for me.
There is one very important thing that may not have been mentioned yet. HANG ONTO THE BARREL (or cocking lever) THE WHOLE TIME THAT YOU ARE COCKING AND LOADING IT! Get used to doing that with any spring gun every time. If that barrel or lever pops loose and slams shut, it can result in crushed fingers, bent barrels, cracked stocks, or other nasty things.