I bought mine here for $9.19 w/ free shipping: www.nds card sale.com (remove the spaces)
.com/product/Gold-R4i-Revolution-SDHC-MicroSD-Transflash-Adapter-Flash-Cart-for-NDSi-NDS-DS-Lite-Gold]http://www.[censored].com/product/Gold-R4...DS-DS-Lite-Gold