Online. Make sure it's SEALED booster boxes first too. Prices online are between 85-95 easily (free shipping most times). When in doubt it's not factory sealed, ask or skip. People trick with buyers by putting LOOSE in the description way down deep.
In stores, they jack up prices to 120-130. Yes, you get it right there at the store, but saving $30-40 > not waiting 2 days.
---------- Post added 05/02/2013 at 02:00 PM ----------
If he isn't a TO, then whoever sold that to him may be in trouble... Do like the kid that went "OH HE GOT AN ABSOL" Hopefully it isn't one that would trade Thunderus EX for one (seen stuff like this happen/about to happen. Had to step in)