I'd have to pay 100 pounds to put a reserve on (that's what a 30,000 pound reserve costs), which seemed a bit steep. This way on the other hand, it's totally transparent and cheap to boot - I just set my starting price at the minimum possible amount that I am willing to sell the domains at. Real, serious buyers don't have to mess around wondering how high they need to bid to get things started, because it's right there in black and white.
To be honest, I don't really care what "the market" thinks of my pricing unless it meets/beats my expectations since regardless I'm not going to sell any cheaper.