ARMv7 devices are not that expensive.

http://www.aliexpress.com/item/Free-shipping-hot-sale-Brand-new-Android-4-0-7-WM8850-Mini-Netbook-laptop-Notebook-WIFI/735555888.html (1.2 GHz Cortex A9 netbook for $69.99)

If you buy at least 100 pieces, you can these for like $30 :D