location ad type of seedlings play a big part...
if your in a upscale type area where theres lots of "gren movment" and city "farming" (or close enough to you could mke HUGE money strting Heriloom/gmo free seeds of any kind...
but in an area where people dont care and everyone has a vggie garden...well unless your burpee...your not making money on seedlings aroud here lol
There are certain things to consider regarding the cost of the vegetable seedling, first is, in what location it must be delivered and the type of seedlings that is purchased.