1-800.
I received this pack of 1991 Edition Upper Deck Baseball pack for free. That pack contains 15 cards from the Low and High series, and 1 3-D Team Logo Hologram sticker.

Autographed Hank Aaron cards is the only valuable card that you can find in those packs... because if I remember correctly, there's no error cards in those packs.
Base Cards
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61 - Royce Clayton

Clayton went from being a Top Prospect in 1991, to playing for a whopping 11 MLB clubs throughout his 17-year career. He retired with a batting average of .258, with 110 home runs, and 723 runs batted in.
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115 - Greg Maddux

The legendary "Mad Dog" retired with an earned run average of 3.16, and 3,371 strikeouts. Now let's take a look at what the back of this series looks like:

A time when trading card manufacturers went out of their way to offer multiple shots on a single trading card.
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230 - Dennis Rasmussen

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244 - Cecil Fielder

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350 - Frank DiPino

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402 - Don Robinson

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527 - Tim Naehring

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699 - Willie Fraser

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704 - Dave Smith

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708 - Terry Pendleton

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717 - Steve Farr

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762 - Turner Ward [RC]

Ward played in 12 seasons during his MLB career, and retired with a .251 batting average, with 39 home runs, and 219 runs batted in.
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771 - Dana Allison [RC]

Allison retired with an MLB win-loss record of 1-1.
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775 - Fred McGriff

McGriff played for seven MLB clubs throughout his 19-year career, 2 1/2 of which was for the San Diego Padres. He retired with a batting average of .284, with 2,490 hits and 493 home runs.
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779 - Jeff Hamilton

Insert Cards
- 3-D Team Logo Hologram - Astros

Darn. I was hoping to pull a Seattle Marniers or New York Yankees Hologram.
That mint and well centered Maddux card is the only card from that pack that will be added to my permanent collection.