How much does it usually cost for a “puppy plan”? (puppy shots, worming, etc.)

It's about $31 the first time which includes first shot and dewormer. It'll be about $37 for the final shots. They like to do 4 rounds of shots. Flea/tick/heartworm products will be extra.

First trip 35.00. Second booster shot 8.00.

About $30-$38. For my puppies boosters shots. Cheapest one I've found

Cheaper than anyone else