What is the price prediction for 0x protocol?

Could you please provide an overview of the current sentiment and predictions for the price trajectory of 0x protocol? Are there any significant factors that are influencing its market value, such as recent partnerships, technological advancements, or regulatory changes? Additionally, what are some of the key indicators that investors should be watching to gauge the future success of 0x and its potential impact on the cryptocurrency ecosystem? Finally, do you foresee any challenges or obstacles that could potentially hinder the growth of 0x in the near future?