Possibly they were quoting the price for one to be able to bundle their font with software that you would sell. Judging by the website, I don't think that their intent is to sell directly to individual users. In that context, the price doesn't seem unreasonable at all. When you consider that high quality commercial fonts for Latin typefaces tend to cost on the rough order of $0.10 per glyph when sold to an individual user, even if you include a volume discount and charged only $0.01 per glyph, you would be talking about a price of around $1000 just for a single user license for a font that covered all of Unicode 4.0.
Just given the sheer size and effort required to make it, any Han typeface is going to cost considerably more than a Latin typeface of comparable quality.
