This deal has ended.
Today only, Amazon has Phineas and Ferb for Nintendo DS on sale for just $18.97. Based on the popular Disney series, this game has received 4 out of 5 stars from its first six reviewers. Compare this price to $28 at Buy.com. Shipping is free with $25 and there is no sales tax (except KS, KY, ND, NY, WA).