Bought today HP Stream X360 laptop for Linux project. Price was 250€ and I consider it to be cheap.
I never ever booted Windows on it, instead configured BIOS for legacy boot and installed xubuntu 14.04 LTS on this. After using USB wifi, I was able to enable proprietary driver for internal Broadcom WIFI adapter and it just works. So far this device is cheap and working linux platform for some embedded projects I have at hand. 32 GB eMMC leaves around 22 GB free after basic install and updates of xubuntu.
So, if you need solid and usable full blown Linux laptop, go for it!