Cheap tablet recomendations?

I'm going on a work trip for a few months and am looking to take a cheap tablet. Definitely under 200, and would prefer under 100.
My needs/wants-decent battery life, wifi, not an apple product, must be able to download and read pdf files(need to study for a test when I get back), must be able to get a wifi only texting app and a camera would be nice for basic video calls.
The more rugged and the more plane/bland looking the better. Have been looking at the amazon fire 7 mainly because of the price.
Thoughts?

Amazon Fire is definitely the best cheap option.

We have 4? of the Amazon Fire tabs. Awesome for kids. cameras....suck.

Whatever your wireless carrier has for cheap or free with a data line for 2 years.

Brian wrote: Whatever your wireless carrier has for cheap or free with a data line for 2 years.

We use straighttalk, but the odds a US based carrier working there is low.

Buy a used Nexus 7 2013 model for less than $100.