Reasonably inexpensive and they serve a purpose as strings, but not the best strings I've used.
I purchased these and a set of D'Addario EXL125 at the same time, popped each set on the same type of guitar at the same time, played each of the guitars approximately as much as the other and the D'Addarios out performed these - the Dean Markley strings didn't feel as fresh out of the pack, dulled in their sound in no time at all and the B string went bye-bye mid bend after just a few hours of playing.
Fair enough, not a controlled experiment. However, coupled with my past experiences of D'Addario and Dean Markley strings and the relatively small price difference, it was enough for me to stick to using the former and ditch the latter.