In my opinion and experience there is no such thing as good quality and cheap in the same sentence. You might find "decent" quality and price but for example even an EQ6R-Pro which is not cheap under any means is barely any good with a larger scope and has many many design issues. Since you care about the quality of the mount I will assume you plan on using it for astrophotography, which means the mount must feature GOTO and autoguiding.
For an equipment of your weight I recommend maximum portability, I wouldn't get any heavy mount with counterweights which will make your setup process hard. My recommendation for you is a ZWO AM3, it can hold a lot more than your weight, it does not require a counterweight bar, basically the harmonic drive is capable of holding all the weight on itself. Plus, you can use your phone to polar align an control the mount. AM3 is not cheap but it's not expensive either, it's somewhere in between and I really recommend saving more to get such a mount. I have been looking for a portable mount myself and will probably go for the ZWO AM5 to carry a medium weight scope without effort.