Monday was opening day for baseball - the start of the season when many fans flock to their favorite stadium. But a day at the ballpark can get pricey, especially if you include the cost of food and drink to get through nine innings.

Classic baseball refreshments like hot dogs and beer can vary widely in price depending on the ballpark, CNNMoney found when it surveyed the 30 major league teams.

Mets fans at New York's Citi Field shell out the most for a regular hot dog - $6.25 a pop. Meanwhile, Cincinnati Reds' watchers at Great American Ball Park can get a dog for just a buck - the cheapest of any of the 26 stadiums that replied to our price requests. So Cincinnati fans can get six franks for less than the price of a single hot dog at Citi Field.

Meanwhile, thirsty fans pay the most at Washington Nationals games - where, unless they take advantage of a $5 drink special before the first pitch, the cheapest beer available is a 16-ounce can for $8. For half that, beer drinkers can get a 12-ounce draft at Cleveland Indians games. The best deal? A 14-ounce beer for $4 at Arizona Diamondbacks' Chase Field.

Some stadiums offer unique food options to cater to local taste buds - those items generally carry even higher price tags.

At Giants games, seafood lovers can enjoy an $8.75 bread bowl of clam chowder or a $16.50 crab sandwich on San Francisco sourdough bread. For those with a sweet tooth, the stadium offers a $10 Ghirardelli hot fudge sundae in homage to San Francisco's famous Ghirardelli Square.

Read - Beer and hot dogs: Which ballparks charge most and see how much $20 buys at your favorite ballpark

Previously:
The best bites in baseball
Major league munching
Peanut-controlled seating a home run for allergy sufferers
$26 hot dog joins the snack roster at Rangers Ballpark