I too bought this for making beer in, and for me it's perfect. I use it as my mash tun and my boil kettle, in single vessel / Brew-In-a-Bag beer making.
Yes it's thin, but if you want a thicker pot you'll have to spend more than double the price of this, to start getting into copper-sandwiched bottoms and stuff. And the thin-ness hasn't given me any problems, it hasn't dinted at all during my first 5 all grain brews. No problems with the quality of the handles, I can pick this up when it's full of hot water, and not worry.
It fits on my kitchen hob (wok burner) being 30cm diameter and about 28cm height.
If you want to go much bigger than 19L you'll have to move your brewing outdoors to a powerful propane burner, but for £30 this is ideal for doing some stovetop home brewing.