EDITED TO REFLECT MY NEW THOUGHTS ON THE MATTER:
Many of us utilize websites such as UltimaCodes.com, etc., in order to locate vendors that have what we are looking for (it saves a LOT of time over window-shopping every vendor.) Just yesterday, extremely cheaply-priced items (especially 120 scrolls) appeared on a few vendors in Luna. Whether it is a new attempt to attract people or it is a programming screw-up. Just be aware of the situation.