This is one of those "you can get any two of the three" situations.
For cheap, go Chinese. Some of them are VERY cheap - and surprisingly strong. But nowhere near what you get with a Tab 3. (You can even get "clones" of Samsung products from China - they look the same and they even have the Samsung name on them. But they have less storage, less RAM, the processor is slower, the parts are much cheaper, they don't talk to Samsung drivers and the tech support is as easy to find as a mermaid riding a unicorn.
If you want the quality of a Samsung, buy a Samsung. You won;t get that quality - in parts, in the build, in the service or even in the support by forums like this one (because you'll be the only one who owns that model) - by buying cheap. Cheap is usually more expensive than expensive.