Yes, it is legit to answer your first question. Not every dropshipper charges and account fee, but more and more are doing it now to offset their admin cost.
Will you make a profit?
That's a lot harder to answer and to be honest, there is no way of telling. That comes down to the product, the price you pay for it, your competition and just general market forces themselves. What I can say is dropshipping WON'T give you the best margin on your product, wholesale is the best option for margin, but of course wholesale is volume buying, so requires an upfront budget.
With what you say, it seems to me that you do have some capital to outlay upfront, so I'm wondering why you would be considering dropshipping and not wholesale to give yourself the best chance of profit?