The amount of traffic to and from your site, files uploads, email etc are measured as Bandwidth.
The space your files and databases(s) useon the server is measured as storage.

We offer 3 levels of hosting with prices dependent on your use of the server resources:

Band A: Up to 100MB storage, up to 1GB bandwidth (per month) £105 p.a.

Band B: Up to 300MB storage, up to 6GB bandwidth (per month) £155 p.a.

Band C: Up to 1GB storage, up to 12GB bandwidth (per month) £225 p.a.