sweet deal
1. A beneficial business arrangement. Primarily heard in US, Australia. The benefits package that the company offered proved to be a really sweet deal. It kept employees happy and helped retain top talent.
2. A purchase that one believes was a bargain. I got a sweet deal on these shoes—they were 75% off!
3. An exclamation indicating that is one pleased with something. Wow, they're giving away free pizza? Sweet deal!