Adobe's Creative Cloud apps are among the best software for their respective creative disciplines and are well worth paying for. Many of the Adobe Creative Cloud apps require a subscription, so any discount is always worth taking advantage of. It's worth noting that many deals only apply to first-time subscribers and may be limited to certain territories, so make sure to check the terms and conditions before you buy.
If you're not sure you want a subscription, you could also consider other software, for example Serif's offerings, where you pay a one-off fee rather than signing up to a subscription. See our Photoshop alternatives and Illustrator alternatives for an idea of what else is available.