A blaster box generally contains 10 packs of baseball cards with a total of about 20-30 cards per box depending on the specific product. They are an entry-level product intended to give those new to collecting an initial sampling of cards from a particular release at a lower cost than a hobby box. Hobby boxes usually sell for 3-5 times the price of a blaster box and contain more valuable chase cards and autographs on average.

Most major card companies like Topps, Panini, Leaf, and Upper Deck release new blaster boxes each season to coincide with their flagship baseball card sets. These usually retail anywhere from $15-30 per box depending on popularity and insert odds. Inside each blaster box collectors will find the familiar cellophane wrapped packs containing either 5 or 8 cards each. Occasionally there may be promotional extras thrown in like sticker sheets or puzzle pieces.

Each pack inside a blaster box contains a mix of base cards showing current players, rookies, prospects, managers, coaches, and even some retired legends of the game. Along with the base cards, collectors have a chance of finding special “premium” inserts and parallels inside as well. These can be themed subsets highlighting different things like awards, positions, jersey numbers and so on. Parallels vary the design or are printed on alternative materials like foil or chromo cardstock.

Inserts included in blaster boxes tend to be of lower scarcity in order to appeal to the target beginner demographic. Hits like autographs, relic cards, or 1/1 rarities tend to be absent but you may find the occasional autograph card redemption or memorabilia card to provide that “hit” excitement. Checklists, buybacks of vintage designs, and visual variations inject diversity into the mix. Box toppers or extra packs are sometimes used as promotional incentives too.

While individual card values from blaster boxes usually aren’t significant, they offer a fun way to build the foundation of a collection affordably. Organizing and storing the cards can spark further interest in the hobby. Plus, you never know – a future star rookie or scarce parallel could gain value down the road. They satisfy that itch to rip packs without breaking the bank. Seasoned collectors may purchase them for player/team/insert completion alongside their high-end breaks as well.

In summary – a baseball card blaster box provides a lower risk/lower reward approach for beginning collectors. The standard formula of 10-12 packs containing assorted base cards, inserts, and a chance at something special makes them an entertaining option. They represent the most accessible entry point into the exciting world of modern sports card collecting.