AppAddict Repo is famous for having free versions of premium and paid games and apps. You can get these apps totally free on your IOS device. This is the best Cydia repo.
How to download AppAddict from a Cydia source

To use this repo you must have a Jailbroken IOS device with Cydiaand and AppSync installed.
- Open Cydia.
- Tap on Sources.
- Then select Edit and then Add
- In the box, enter https://cydia.appaddict.org/.
- Tap add and wait for it to finish the installation.
- After the installation tap on the repo.
- Respring your device to us the repo.
AppAddict repo Source
https://cydia.appaddict.org/ is Source for this repo.
Also see the sources of ReProvision Repo and Kiiimo Repo.