You don't need a lot of money to get your hands on Android 5.0. You don't need a current device, either. The Nexus 4 and 2012 Nexus 7, despite being over two years old at this point, both get to taste Lollipop.
Picking up either of these devices is one of the more affordable ways to play around with Google's latest software. But Expansys USA is holding a blowout sale where it will let you digitally walk out with both devices for as low as $159.99. That amount will net you the 16GB Nexus 7 and the 8GB Nexus 4.
If you would prefer the 16GB Nexus 4 (which you should), you can get that bundle for $179.99. In either case, the gadgets are refurbished. But these devices are old, so you probably expected that. You also probably don't care. After all, you're about to get a phone and a tablet for less than the cost of a Moto G.