All The President’s Men Named In The Whistleblower Complaint | Deadline ...

Opposition research is a thing of inestimable value to a campaign.  Campaigns spend many hundreds of thousands and even millions of dollars on research of their opponents.  Thus it can probably be valued by first dividing the current campaign costs by the current polling numbers and taking the average.  Then multiplying that number by the number of polling points the oppo research can be expected to move.  Just to give some idea of how much a campaign is actually spending on trying to obtain its poll numbers.

Next is the conspiracy to obstruct angle of this matter.  If this evidence could be of use in the prosecution of the already underway investigations of a similar nature, and this is an effort to hide "collateral/collaborating"  evidence, then yes, it is a criminal conspiracy.