yaa you are right 'trap' is a Scary word, i'll use convince ;)
Why do you think they'd use your software?
-Because i think they are charging more.
-Open Source and free model added advantage apart from other added features, but at start with basic version.
Whats your benefit?
-Pro version
Free? Does that mean no support?
-There will be support but only email and limited number.
Self-hosted?
-No
A word of advice regarding the copy on your website, make sure you hire someone who can write well. Please don't take this is a slight, this is serious advice. First impressions can make or break your customers' experience and poorly worded writing can severely damage the experience.
I agree. I had trouble following OP's intent due to language. I think that the reason more people haven't chimed in is that the initial question is worded so confusingly. And also, I don't mean this as a slight; just an observation. I doubt that anyone would mind if you re-phrased and re-posted with more substance.
Why do you think they'd use your software? -Because i think they are charging more. -Open Source and free model added advantage apart from other added features, but at start with basic version. Whats your benefit? -Pro version Free? Does that mean no support? -There will be support but only email and limited number. Self-hosted? -No