it is okay for buying, even though maybe more stat filters and the possibility to sort by dps, time left and bid are definetely missing.
but for selling, it's horribly clunky. 10 auctions are way too low and it should generate a price suggestion based on similar items that are being sold already. for now, i sell my 25-35 items for 2-4k gold because looking prices up would be way too slow.