maybe I didn't make my point very clear. My point isn't about paying sales tax, we all have heard about this coming to online transactions for a long time now.
My point is about the sales tax paid: you can't get it back! Unlike when you buy something at the hardware store down the road or at the building supply store across town; When you 'return for refund' those items you get both the merchandise price AND the sales tax refunded. With an eBay purchase refund, you get ONLY the merchandise amount refunded, NOT the sales tax. Once it is collected by eBay you'll never see it again.
I'm in the process of protesting directly to eBay this unfair policy. We'll see what happens. I'll post here the contact information if you want to join me in this protest.