Of all the metrics, shares are the most important regardless of the social media site. On Facebook, Google, and Instagram, shares are what really push trending material in front of eyeballs. Vine is no different--revines are the key to massive viewership. When you buy revines, you're putting the groundwork in place for exponential returns.
If you're trying to get more Vine followers or more likes but are limited in your resources to get started, your best bet is to invest in revines. The number of revines practically tells the viral history of a Vine and the more revines, the more likely someone is to keep sharing.