Yes the difference is huge, but let's say a hypersonic missile costs the same as a Tomahawk which would be incredibly cheap, as a Tomahawk is a nonstealthy subsonic missile without need for rocket booster, from the 1980's.
A Tomahawk costs around $1 million. A JASSM costs from $1-2 Million
The CSBA previously had the following estimate for $10 million for a 1500km Land-Attack Ballistic Missile. So you could buy at least 5 JASSMs for the cost of a single ballistic missile.
Hypersonic missiles are coming in even more expensive in the US.