Hi Allen, I'll take a stab at the first question and leave the rest for others. I would not make such a small sell ($185) unless you want to close out a position to simplify your portfolio.
The expenses are much worse than 5%. Let's say you made 20% on the sale, so you bought the shares for $154. You made $31 and paid $20 in commissions, that's 65% in expenses.
If the trade was made in a taxable account the net gain is even worse.
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