Hmm...retailers too. Even the big box stores that supposedly sell "beach cruisers."

Amazon: Sports & Outdoors › Cycling › Bikes › Cruiser Bikes
REI: Cruiser Bikes
Sports Authority: Cruiser Bikes
Target: cruiser bikes
Walmart: Toys > Bikes & Riding Toys > Adult Bikes > Comfort Cruiser Bikes (note: "toys" LOL)