The point in the other answer about volatility would apply in some cases, but your case is actually worse. Your stop-limit order is just a limit order in this case because you're trying to put the stop over the current bid/ask. (I'd be surprised if your broker even allows this order to be entered.)
This is from Capital One, which happened to be the first hit on Google when I looked just now for order entry:
Sell Orders: The Stop Price must be entered at least $0.01 below the current Bid Price and the Limit Price must be equal to or less than the Stop Price.
That's because the stop-limit is not for taking a profit, like you seem to want, but an alternate way of implementing a floor. An example from the same site:
Sell Stop-Limit: Let's say a security is currently trading at $30.00. You'd like to sell the security if it reaches or goes below $29.00, but only if the security can be sold for $28.00 or more. You can place a Stop-Limit order by setting the Stop Price to $29.00 and the Limit Price to $28.00. If the security reaches or goes below $29.00, your order becomes a limit order with a Limit Price of $28.00.
The difference between stop-limit and stop-loss is that the stop-loss turns in to a market order whereas the stop-limit turns into a limit order. That means with the stop-loss, you're pretty sure to get execution at some price, but in a wild market it could be any price. With the stop-limit, you're basically saying "if it falls too fast to get out, I'll hold it and wait for it to come back."