Quite an extreme way to get taller that some people consider is leg lengthening surgery. Originally it was used for correcting disproportional limbs but now is applied as a cosmetic enchantment as well.
Leg lengthening surgery is also known as Symmetric Extended Limb Lengthening. The surgery is expensive (at least $20k). Here are some prices for specific countries:
U.S. $65,000 (ISKD)
Germany $56,000 (Albizzia)
Ukraine $45,000 (Blisnikov)