New Delhi, 26 July (NNS): The prices of copra in bags went up by Rs 800 to Rs 12800 per quintal owing to the strong offtake even after the higher level. Recently, the prices have gone up by Rs 500 per quintal. The market sentiments may affect because of the shrawani festivals and weak supply than the normal level. The spot copra prices may likely to remain strong during the coming days.