All of these have free Super Saver Shipping unless otherwise noted. Games are in order of US release date.
Blue Dragon Plus $17.97
http://www.amazon.com/Blue-Dragon-Plus-Nintendo-DS/dp/B001G9F9JQ/ref=cm_lmf_tit_8
Master of Monster Lair $16.99
http://www.amazon.com/Master-Monster-Lair-Nintendo-DS/dp/B001BEX7PO/ref=cm_lmf_tit_18
Rhapsody $14.99
http://www.amazon.com/Rhapsody-Musical-Adventure-Nintendo-DS/dp/B001C4C4I4/ref=cm_lmf_tit_10
Bleach Dark Souls $14.97
http://www.amazon.com/Bleach-Dark-Souls-Nintendo-DS/dp/B00162CMRU/ref=cm_lmf_tit_2
Trauma Center Under the Knife 2 $14.97
http://www.amazon.com/Trauma-Center-Under-Knife-Nintendo-DS/dp/B0017HRZ26/ref=cm_lmf_tit_35
The World Ends With You $23.49
http://www.amazon.com/World-Ends-You-Nintendo-DS/dp/B00136MBHA/ref=cm_lmf_tit_20
Ninja Gaiden Dragon Sword $15.30
http://www.amazon.com/Ninja-Gaiden-Dragon-Sword-Nintendo-DS/dp/B000WCE9XK/ref=cm_lmf_tit_15
Advance Wars Days of Ruin $17.99
http://www.amazon.com/Advance-Wars-Days-Ruin-Nintendo-DS/dp/B000XJNTMY/ref=cm_lmf_tit_1
Master of Illusion $12.70
http://www.amazon.com/Master-Illusion-Nintendo-DS/dp/B000U5TUVK/ref=cm_lmf_tit_31
Ontamarama $15.49
http://www.amazon.com/Ontamarama-Nintendo-DS/dp/B000TP2UZE/ref=cm_lmf_tit_27
Dragon Quest Monsters Joker $16.50
http://www.amazon.com/Dragon-Quest-Monsters-Joker-Nintendo-DS/dp/B000SSNCYU/ref=cm_lmf_tit_25
Draglade $15.10
http://www.amazon.com/Draglade-Nintendo-DS/dp/B000TTZHIM/ref=cm_lmf_tit_22
Touch Detective 2 1/2 $13.49
http://www.amazon.com/Touch-Detective-2-1-Nintendo-DS/dp/B000TP2UWC/ref=cm_lmf_tit_16
Cookie & Cream $14.99
http://www.amazon.com/Cookie-Cream-Nintendo-DS/dp/B000QD1398/ref=cm_lmf_tit_26
Devilish $8.97 + $2.95 shipping
http://www.amazon.com/Class-Action-Devilish-Nintendo-DS/dp/B000N6TYPI/ref=cm_lmf_tit_18
Custom Robo Arena $15.69
http://www.amazon.com/Custom-Robo-Arena-Nintendo-DS/dp/B000HE9LKE/ref=cm_lmf_tit_12
Gunpey DS $6.80
http://www.amazon.com/Gunpey-DS-Nintendo/dp/B000HAUOS6/ref=cm_lmf_tit_21
Final Fantasy III $19.99
http://www.amazon.com/Final-Fantasy-III-Nintendo-DS/dp/B000GABOTU/ref=cm_lmf_tit_20
Dragon Quest Heroes: Rocket Slime $14.99
http://www.amazon.com/Dragon-Quest-Heroes-Rocket-Nintendo-DS/dp/B000GA8UAQ/ref=cm_lmf_tit_7
Polarium $11.99
http://www.amazon.com/Polarium-Nintendo-DS/dp/B0007P0U3U/ref=cm_lmf_tit_9
Blue Dragon Plus $17.97
http://www.amazon.com/Blue-Dragon-Plus-Nintendo-DS/dp/B001G9F9JQ/ref=cm_lmf_tit_8
Master of Monster Lair $16.99
http://www.amazon.com/Master-Monster-Lair-Nintendo-DS/dp/B001BEX7PO/ref=cm_lmf_tit_18
Rhapsody $14.99
http://www.amazon.com/Rhapsody-Musical-Adventure-Nintendo-DS/dp/B001C4C4I4/ref=cm_lmf_tit_10
Bleach Dark Souls $14.97
http://www.amazon.com/Bleach-Dark-Souls-Nintendo-DS/dp/B00162CMRU/ref=cm_lmf_tit_2
Trauma Center Under the Knife 2 $14.97
http://www.amazon.com/Trauma-Center-Under-Knife-Nintendo-DS/dp/B0017HRZ26/ref=cm_lmf_tit_35
The World Ends With You $23.49
http://www.amazon.com/World-Ends-You-Nintendo-DS/dp/B00136MBHA/ref=cm_lmf_tit_20
Ninja Gaiden Dragon Sword $15.30
http://www.amazon.com/Ninja-Gaiden-Dragon-Sword-Nintendo-DS/dp/B000WCE9XK/ref=cm_lmf_tit_15
Advance Wars Days of Ruin $17.99
http://www.amazon.com/Advance-Wars-Days-Ruin-Nintendo-DS/dp/B000XJNTMY/ref=cm_lmf_tit_1
Master of Illusion $12.70
http://www.amazon.com/Master-Illusion-Nintendo-DS/dp/B000U5TUVK/ref=cm_lmf_tit_31
Ontamarama $15.49
http://www.amazon.com/Ontamarama-Nintendo-DS/dp/B000TP2UZE/ref=cm_lmf_tit_27
Dragon Quest Monsters Joker $16.50
http://www.amazon.com/Dragon-Quest-Monsters-Joker-Nintendo-DS/dp/B000SSNCYU/ref=cm_lmf_tit_25
Draglade $15.10
http://www.amazon.com/Draglade-Nintendo-DS/dp/B000TTZHIM/ref=cm_lmf_tit_22
Touch Detective 2 1/2 $13.49
http://www.amazon.com/Touch-Detective-2-1-Nintendo-DS/dp/B000TP2UWC/ref=cm_lmf_tit_16
Cookie & Cream $14.99
http://www.amazon.com/Cookie-Cream-Nintendo-DS/dp/B000QD1398/ref=cm_lmf_tit_26
Devilish $8.97 + $2.95 shipping
http://www.amazon.com/Class-Action-Devilish-Nintendo-DS/dp/B000N6TYPI/ref=cm_lmf_tit_18
Custom Robo Arena $15.69
http://www.amazon.com/Custom-Robo-Arena-Nintendo-DS/dp/B000HE9LKE/ref=cm_lmf_tit_12
Gunpey DS $6.80
http://www.amazon.com/Gunpey-DS-Nintendo/dp/B000HAUOS6/ref=cm_lmf_tit_21
Final Fantasy III $19.99
http://www.amazon.com/Final-Fantasy-III-Nintendo-DS/dp/B000GABOTU/ref=cm_lmf_tit_20
Dragon Quest Heroes: Rocket Slime $14.99
http://www.amazon.com/Dragon-Quest-Heroes-Rocket-Nintendo-DS/dp/B000GA8UAQ/ref=cm_lmf_tit_7
Polarium $11.99
http://www.amazon.com/Polarium-Nintendo-DS/dp/B0007P0U3U/ref=cm_lmf_tit_9