Epson 1280 cartridges are not Durabrite. The ink is Ultrachrome which is not to be cunfused with their Ultrachrome K3 series.
Since the 1280 is a popular printer for transfer/sublimation industry you have many options bulk CIS and a few options on prefiled cartridges with pigment inks. One prefilled solution is from JBL Graphics. A set (1 black & 1 tri-color) is about $70.00. I have not used the ink but have heard some positive comments on their inkjet transfer paper for whites/lights. You may also check with some of the forum sponsors to see if the offer pre-filled and bulk systems.
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Good luck