I've been considering doing a lifetime deal for Tweetlify.
I've heard mixed reviews about it, so I don't know what to do.
Please help
Broad answer:
It can ruin your profit margins if you aren't careful
Because customers pay once you have to make sure you make money from the deal (not just the money from them buying but mathing out the costs you spend supporting them for the duration of the lifetime deal vs revenue/price of the deal)