The UO shields found here are only the useful/valuable ones that players might still need during these times. Some of the most important shields for a mage include spell channeling so you can hold the shield and still cast spells. There are also some imbued shields that people request along with all of the well-known artifact shields.
You can buy UO shields here and then pick them up at Luna bank. You can not hold two-handed weapons and a shield at the same time. We will soon be adding legendary drop shields for the 30% soul charge. If you are looking for a shield for sale that you do not see here, just ask live chat for it.