Selling at ebay $75.99
http://www.ebay.com.au/itm/APOTOP-DW09-Wireless-Card-Reader-…
details
Looking to increase the storage on your smartphone or tablet? The Apotop Wi-Reader allows you to access any SD card or USB Flash Drive wirelessly. It even doubles as a wireless router! Simply plug your SD card or USB flash drive into the Wi-Reader and you are ready to share or transfer data.
The Wi-Reader is 100% compatible with your iPad or iPhone without the need for iTunes.
The Wi-Reader is extremely compact and comes equipped with a built in rechargeable battery without the need for an external power supply, making the Wi-Reader the ideal travel companion.
Instructions:
Download the Wi-Reader app to your iPhone or iPad at the iTunes Store.
Connect your iPhone or iPad to the Apotop Wi-Reader via Wi-Fi
Click on the app and your data will be available to view and play on your iPhone or iPad
Connection: USB
Product Code
ID-JY8DW09
I think you would be better getting a cheap router with USB port. Connect a hard disk to it. Or get a Epson WIFI printer with card reader, and you can share the files from media cards/USB.