Hi there @Dalil
The ANA 2 Ultimate Presets Bundle Vol 1 includes 6 Presets packs ( Vol.1 to Vol.6 ), each pack contains 100 new presets and the regular price for only one pack is around 16€ ( full price, subscribers get an additional 10% off ). This Ultimate Presets Bundle can also be purchased separately, but if you do the math it's a better deal to buy it with the current discount offer that comes with ANA 2.
More about it here : https://www.sonicacademy.com/products/ana-2-ultimate-presets-bundle-vol-1
Now, does it make a difference ? Well, with the bundle you're adding 600 presets to ANA 2.
Presets also means new Wave Tables & samples for the sampler OSC inside ANA 2, as well as advanced sound design using the powerful Arpeggiator & Chords Mode and also effects. So next to adding production ready presets to the synth, presets are also a great way to dive into advanced sound design by learning how they've been made.
All of that said, it's entirely up to you, but yes, I think it's a very good deal
Hope that helps