Sales Tax collection is required for many sellers. They should learn about the local, state, and federal tax laws for their respective location and situation. We are not able to answer any specific questions regarding whether a seller needs to collect taxes on their product sales or not. We suggest they speak to an accountant regarding this issue.
Set taxes for PayPal in the PayPal Profile: https://www.paypal.com/us/cgi-bin/webscr?cmd=_profile-sales-tax
Set taxes for Google Checkout in the PayLoadz profile here: https://www.payloadz.com/account/profile.asp