Even the rtw line has seen substantial increases. Used to be a jacket cost around $2500 but those days are long gone. If there is a clothing item you really love, wait for sales or ebay. I just purchased a lovely silk top that was shown with the campaign jacket. Got the jacket on sale; it's black boucle, double breasted (timeless). The blouse was originally over $2K (see what I mean) for less than $350 off ebay. The tags are still on it. It was marked down twice by the retailer and only got to $900. Shop consigment stores as well, if you live in a big city.
Chanel costume jewelry pieces are no bargain either when paying full retail. I'm not willing to spend $1200 for a necklace. For that and less, I can purchase a beautiful anniversary ring with alternating round and emerald cut diamonds. I don't know what real pearl necklaces cost these days, but if given the choice between painted glass beads and real pearls, I'd invest in real pearls -- and did so years ago).