Kids bikes (20") are impossible to find right now and I was researching these the last few days. This is a new release from Segway. Nice, unique design with cool safety features. The 18" seems to be comparable to the 20" (every local Trek and Giant dealers are out of stock). For clarification, these aren't electric like other segway products. They also have a 14"... but maybe better deal to just get the $99 huffy most places still have. Lowest ever (only bene out a couple of months) per CCC.
14" with training wheels (ages 3-6) is 188.34 (reg 219)
18" (ages 5-10) - $214.14 (reg $249)