Do I need to pay taxes on shipments returning to country of Origin like USA?

As a general rule pinballs shipping to USA from Canada have minimal taxes owing. In some rare cases customs may ask you to provide proof taxes where paid on the pinball before it left the country. Duties rarely exceed 150.00$ USD on a 10,000.00$ USD pinball purchase. The following link will provide you with more accurate information about how US Customs calculate duties

https://help.cbp.gov/s/article/Article-334?language=en_US