I would say 'no' tbh and hold out for the brown. They would be much more versatile. I have high heeled burgundy ones and only wear them about ten times a year but I wear my brown low heeled ones absolutely loads.
I also think you'd buy the purple and then still want to buy brown, so would pay twice. In that case, you could afford more expensive brown ones in the first place (thus extending your range) and not bother with the purple ones!