I have 3 photography stores near me, two of which sell used gear, and all of which sell film. Not a ton, but they do still have the film. A few months ago one of them removed the storage shelf for film from behind the counter. Now all their film hangs on pegs like at Walmart.

Kodak's Gold 100 is my main film, and as far as I can tell, it's discontinued. That means there is no ASA 100 color film other than Kodak Ektar. I wish there was, but if I had to choose another speed I'd opt for either Fuji or Kodak's 200 speed films, both are nice. I just shot a roll of Fuji's C200 last week, and it developed and scanned real nice.

Fuji C200