For the full measure, prices are based on the fabric selection. I've never purchased a shirt at the first (lowest) tier, but the second tier is 400 euros. Many of the fabrics on the second floor are unique to Charvet. If you like patterns that are a little bolder and you aren't just looking for white or blue, it is really a lot of fun to pick shirts (and going through the whites and blues is also nice).
As for the delicacy of the products, I've never found either the ties or shorts to wear poorly. Personally, I think that the off the rack shirts that I can purchase in NYC are relatively unflattering (extremely loose fitting; too long in the tail) and generally not worth the price. However, the full measure experience is totally different and, in my humble opinion, worth every penny. The options are generally limited only by your imagination (they offer approximately 40 collars, but each option can be adjusted in any way that you wish; same goes for cuffs).
You have to have a lot of patience to go through with the full measure, particularly if you don't live in Paris. I live in New York and it took four visits (first visit involved approximately 40 measurements plus selection of various details and fabric selections; second visit is a baste fitting with a white poplin shirt and various modifications in advance of receipt of my first shirt; third visit (which came only after I had worn and washed my first shirt 5 times at Charvet's request) was for me to comment on my happiness with the shirt; fourth visit was the same process as the third visit reflecting various tweaks). For all of that, Charvet charged 400 euros with no guarantee of receiving a second order. While I recognize that 400 euros is a great deal to spend on a shirt, I think it was worth every penny.