I either get my Agency books in paperback at Wal-Mart, Amazon MarketPlace or Ebay. I usually save about $2 to $3 dollars this way. I love to have them in ebook form but I'm not gonna pay those outrages prices! Sometimes I see a book though I just want and can't help myself and pay the $7.49. I had no idea I'd be going out this week or would have waited.

Most of my money goes to Harlequin and non agency books.
Taxes on ebooks seem the be on the Hachette, Penguin, Random House, HarperCollins, Simon & Schuster & Macmillan
So if a ebooks says New From then lists the price. You will probably be taxed on it.
@FF2 I have the same problem with Newegg on my PC part purchases! When I lived in NC I didn't have to pay the extra taxes. Taxes here are higher then most states. It's 9.75% because we don't have a state income tax.