Trek and Schwinn have sturdy beach cruisers with traditional geometry. Electra has beach cruiser with THEIR geometry...they move the saddle back behind the bottom bracket. That makes it easy to put both feet down at a stop sign or when you stop to talk with a neighbor, as the saddle is several inches closer to the ground.

Some of the big chain sporting goods stores, such as Academy and Dicks, sometimes have Schwinn cruisers for less than the bike shop price. Beach cruisers relatively simple, so the staff of a chain store ought to be able to assemble one correctly.