I too think that price is really determined by where you live and your target market.
If your target market is "gourmet", then it would not matter if other people sell their soaps for rock bottom prices, because the people who buy gourmet are not interested in cheap soap. Essentially there are many targeted markets within the handcrafted soap relhem, all with different criteria.
I guess what I am saying is that I think people purchase soap for mostly emotional reasons, not just to find the cheapest handmade soap. They imagine themselves using the soap, being apart of something "natural" "clean" "fresh" "gourmet" or whatever your marketing and look portray. I think the actual soap plays a smaller part of the sale than other factors (especially for web based sales as people cannot touch/smell the product), such as the look, marketing angle, sales pitch/product descriptions, apparent trustworthiness of the seller, ect...
If someone cares enough to buy handmade soap over store soap, they are probably not going to be so concerned with price, but the product and what the product means to them will be what attracts a buyer.
I suppose if you had two soap stores with the same theme (like "All Natural"), and very similar soaps, and perhaps the customer couldn't decide which soap was better, they would probably go with the lower priced soap.... but that's competition, which is good for the customers, because price fixing rips people off.
But I say all this with a friendly feeling, and I don't want to be negative, because everyone has good ideas! I guess that's the thing with communicating in text is that tone is hard to determine and I don't want to step on toes, because this is a great forum!