I am using the multi-vendor shipping module and I am in production mode with the USPS. I was checking shipping costs to make sure they were right when I noticed that parcel post was higher than priority mail.
I checked the same package and weight on the USPS web site and found that Express and Priority were correct, but parcel post was $3.89 lower than reported by the shipping module.
If someone could help, I would appreciate it very much.
Thanks,
Mike