Their cost estimator estimates 30 minutes preparing a chargeback dispute. I do them when they come in and it never takes even 5 minutes.

Hey there, founder of Chargehound here, it's a slider so you can adjust it to 5 mins if you want.

Many companies do take up to 30 minutes especially if they are compiling a comprehensive portfolio (if the dispute is for thousands of dollars) and are outsourcing the representment.