In most cases the limits are put in place before you list your first item so they would not know.
Some have been lucky enough to get no limits, some very small, some large limits.
I think it is based on several things but listing a pencil wont effect your limits if you already have them on the account.
Limits will be raised over time and according to your fb and dsrs etc etc.
I have researched and found some accounts with 0 fbs but i see them listing 10 items at once in single listing and worth of each item is 85$ + .
so was wondering what are they doing different
I had a 10 things/ $1,000 limit and they revised it after a month allowing for more so it definitely takes time more than anything but I am glad to say I am not at 800 items or $25K so things are looking good and I don't even sell that many items so this limit is more than enough ,I wish I could share with someone :-)