It depends on the demand of the coin if many investor wants to buy the coin the higher thr price it will get, so to make sure that there will be a new investor or buyer the developers and team should achieve all the accomplishment and continue to expand and upgrade the project.

It's also important that the project has a unique concept and unique solution to an existing problem using a blockchain technology (or the likes)

An exposure to the community might affect the price as well so a bounty would help since there's a lot of niches here in the forum but it it's still depends on te project whether there will be an investors or none.

To conclude this, a unique and promisable project would increase it's investors and the value of coin as well.