Reddit reviews Konami YuGiOh Noble Knights of the Round Table Play Mat
We found 2 Reddit comments about Konami YuGiOh Noble Knights of the Round Table Play Mat. Here are the top ones, ranked by their Reddit score.
The Noble Knight one is like $5
Here: http://www.amazon.com/Yu-Gi-Oh-Noble-Knights-Round-Konami/dp/B00Q7BVN20/ref=sr_1_1?ie=UTF8&qid=1451761775&sr=8-1&keywords=noble+knight+mat
Hopefully not just parroting the other comments in the thread.
Not having a mat isn't the worst thing in the world, but I'd definitely suggest getting one soon. Tables aren't always the best surfaces to play on and it's always better to get some extra protection, plus cards are easier to play with on a smoother surface.
As for purchasing a playmat:
The cheapest one I know of that's officially yugioh (That's full size) is the one that comes out of the Noble Knights box, which you can purchase here: https://www.amazon.com/Konami-YuGiOh-Noble-Knights-Round/dp/B00Q7BVN20 . A decent amount of people will have these mats, but it's whatever.
Legendary Collection Kaiba mats are a thing, but they're cardboard and awkward, plus they're more prone to irrepairable damage because of their cardboardness. Rubber isn't really going to tear or get cracks.
What you can also do is check out mats for other games. As long as they don't have zones, mats can be used for any game. I know one of my locals is more of a Magic shop than a Yu-Gi-Oh shop, so they have LOTS of Magic mats for cheap, but they're literally the exact same thing as yugioh mats (just themed with Magic artwork)