The 2013 Nexus 7 is still technically the current-gen Nexus tablet from Google. It's for sale in the Play Store and there are a ton of accessories for it. Sure, it's getting a little old, but you can pick one up for a mere $159.99 on eBay right now.

2014-09-12 13_41_04-Asus Google Nexus 7 2nd Gen 7_ 32 GB Android 4 3 Wi Fi Tablet 2013 Black 8862275

This is a manufacturer refurbished model, so you only have a 90 day Asus warranty. It is otherwise the same tablet you'd get from Google for $110 more. It's not worth that anymore, but $160 isn't bad. Note, this includes free shipping and no tax in the US, unless you're in Washington state, then it's 9.5% tax. There have already been over 4,000 sales on this listing, so hurry up!

[32GB Nexus 7 on eBay]