Yeah, we have to collect the tax and set it aside for a year. I have a separate google sheets (like excel but free) to keep track of it on top of the quickbooks I use. The state will actually send rep to your place if they realize you might need to pay. At least Texas does as I've learned. So forget making double on your investment. Not with Amazon, ebay, PLUS the taxes from the state and paypal or credit card provider. I can only add 50% of my cost to the product and then add on the fee for shipping and paypal into the price. People want free shipping now.