I have both of these pairs of shoes and I find that the Chanel is worth the money. The french sole have plastic soles, so do the Chanels in this style. But the french sole shoes are very thin and have no support at all. I had to get the sole replaced because they were so slippery to walk on any surface and the sole was very thin.
They are about half the price of the Chanels but to be honest I think the Chanels have better quality leather and they are better made. Instead of these particular Chanel flats you may want to try the ballet flats, they are around the same price maybe about $25 difference in price from this style but more comfortable.