Digikey is my primary source for most parts. Digikey single quantities are a ripp off. Thank goodness I buy no less than 25. Same for Mouser. The lowest price for a single quantity is direct from Microchip. Yet this is offset by a higher shipping price. I prefer a distributor by the fact that I can buy various items from one location and pay one low cost shipping as opposed to paying various shipping fees from various stores.
Yes, shipping is the governing property of my parts ordering, item quality second, item price third.