Not every hot dog need be glamorous. For more than 60 years, the Southie stalwart has plied Bostonians with their favorite cheap dog: a simple steamed weiner on a dry-toasted bun, for all of $1.90. There are two ways to enjoy it: all around, which means mustard, relish and onion; or all-inc., which adds ketchup to the mix. Feeling flush? Spring for the chili cheese dog at a robust $2.95.