I liked going to gamesandcards.com in eagle rockbut they've been pricing their boxes $20 above blowout and cardsinfinity.com.
South bay cards is where it's at, you can take the 405S to the 110 S, but you'd have to expect some traffic on saturday night.
Frank and sons is hands down the best, but they are only open two days.
If you were unwilling to offer me a discount on your card, please don't PM me with your lowball offers on mine. Go Bills.
Baseball PC: Nolan Arenado