Purchasing the PS Vita WiFi for $249.99 at Amazon grants a $50 in-store credit at the retailer than can be used on other items. This also include the PS Vita 3G Bundle for $299.99 that comes with a 4GB memory cards, unit 13 download voucher and a one year membership to Playstation Plus which grants access to free game downloads.
Another option for the $50 in-store credit would be to use it on memory cards for the PS Vita. The 32 GB memory card is discounted by $15 and available for $84.99. The only other memory card that is eligible to be used with the in-store credit is the 8GB memory card that is on sale for $25.