Anyone used those Life Time Deals platforms? What was your experience?

Yes, It is a mix of good and bad.

You know what most of the platform is not founder's friendly :D
Some platforms offer around 30%,40% etc.

But there is a platform which you can check out
saasmantra.com/partners

A mix of good and bad:

Bad:

• only profit 30% of most deals
• users expect & ask for too much

Good:

• good initial marketing strategy
• initial boost of money & cash flow

Check out these case studies on LTD from my database at https://airtable.com/shrduxXWt6Z4Cf6d8/tbl0YIy0t5ijN5SXx or at GrowthHunt