Buy the dip
It depends on the fact that if the ETC has long term future. If it has good community support, it is a good buy.
I think it is time for the ETC developers show the world that they are not just about revolution and stop relying of Etnereum brand, the market need something to hold on to, the price has been dropping for some time there is need to change this trend, although the developers don't have any stash of ETC like the Ethereum foundation that has alot of both ETH and ETC
The ETC does not have good developers at the moment. So the price is dropping. When it has, it might rise back.