There's many factors that contribute to the quality of a blade: carbon content, contaminants, alloy and temper. If you buy a good brand knife you can be sure that rigid quality controls were part of the manufacturing process, with unknown brands it is hit and miss really. Most cheap quality stuff for sale in the West is made in China but that does not necessarily mean the Chinese do not know how to make high quality stuff.
You need to ask yourself whether you need to spend the extra $$ for the jobs you are going to use the knife for.