Hi Paul
Go to This link on the PG Music Web Site , scroll through the tabs at the top to view the entire contents of each package.

The Everything Pack and the Ultra Plus Pack both contain all packs, so therefore include the Jazz Packs.

Purchasing separately is more expensive than purchasing the Ultra Plus Pack.

The 10 Jazz separate packs are between $79 and $99 per pack, plus you need to purchase Pro or Mega pack in the first place.

The more styles you have the better opportunities are available to you. You can start off small and add more packs, but soon it would have been cheaper to purchase them all as a package deal in the first place.

Just my thoughts anyway.
regards
Trevor
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