It's funny, because my choice of pricing with my current support costs, and the fact that nearly all my advertising is fixed-cost 'brand building' vs. per-customer cost referrals or click ads, actually makes the smaller domains /much/ more profitable than the larger domains, which yes, probably means I've mispriced something. But the smaller domains do have a much larger 'margin for error' - if I sell a block of them to spammers, or to people expecting a full-time sysadmin, they can get expensive fast.