I just came back from a week in Egypt and the same thing happened. In addition to avoiding haggling, I also failed to purchase many desired items because stopping for even a moment to look at something in a shop meant being hit with a whirlwind of high pressure tactics, grabbing, blatant lies, and unctuous appeals.
On the rare occasions when a purchase was made, I did overpay, but I made sure to only reward people who didn't act like dicks while trying to make a sale.
Rent some motor scooters and drive around Cappadocia.
Most of the good artifacts are in Berlin, so the ruins and museums tend to be disappointing, but you may find more impressive things as you move south down the coast from Istanbul.