The Microsoft Lumia 535, the company's first self branded Lumia is now available in the United Kingdom. You can purchase the unlocked device on Amazon for only £97.32 (around $147 USD)
The Lumia 535 features a 5 inch display with a 540 x 960 pixel resolution, 8GB of internal storage which can be expanded through microSD, a 5MP rear camera, a 5MP front camera, a 1950mAh battery and a 1.2GHz quad-core Snapdragon 200 processor with 1GB of RAM.
The handset runs Windows Phone 8.1, which includes the digital personal assistant Cortana, the Action Center for notifications among other features.
Note that the Lumia 535 is available in Orange, Black and White only. However the White variant is the only one below £100.00.
source - Amazon UK