The other seller has been selling without following the Market Rules of posting the prices. The other seller violated the rules 1st and have been doing so for several months now and not a single warning about the Market Rules. I expect that he should be your priority since he has violated the Market Rules for several months now.
I'm just following the normal protocol of the other seller of not posting prices. It is hard to believe the other seller has escaped your notice for several months while my thread got your notice within a day.
I believe the other seller should follow your Market Rules first and should have gotten a warning first. This is the proper example to other sellers. The first violator should always be corrected so that other members will not follow suit. The other seller, being the primary violator, should follow your Rules so that other members, like me, will not follow suit.
Rules should be followed by everyone equally.
I just made this post today and get this warning. I better save this post for future references.