Yes, it's irritating, but buyers dont seem to care. It got a mention on last weeks "ask the team" and they were going to pass it on. The amount the buyer pays is viewable if you click BPF just above where you input price. I personally think the main reason to adjust is to keep the price at 6.99 rater than 7.07 as it might get missed from a search or be much further down.
There is a survey box when listing where you can add gripes and give a star rating. I'm sure this will get addressed in time.