It depends on three things:
Do you care how long it takes to sell?
Finding someone that wants it.
Price.
If you don't care how long it takes to sell then interested party & price are your only hurdles. If it is not a high demand item, might take longer, 5 days is too soon. Two years old, no box and 1/3 off is not a bad start, however you are not going to get the bargain hunters with that. Personally, I rarely drop my price as I don't care how long it takes to sell. I have had items on Craigslist for up to a year without selling. Things do eventually sell at or near my asking price. If you are in the ballpark pricewise with other sales of your gear, there is nothing wrong with waiting for the price you want.
Do you care how long it takes to sell?
Finding someone that wants it.
Price.
If you don't care how long it takes to sell then interested party & price are your only hurdles. If it is not a high demand item, might take longer, 5 days is too soon. Two years old, no box and 1/3 off is not a bad start, however you are not going to get the bargain hunters with that. Personally, I rarely drop my price as I don't care how long it takes to sell. I have had items on Craigslist for up to a year without selling. Things do eventually sell at or near my asking price. If you are in the ballpark pricewise with other sales of your gear, there is nothing wrong with waiting for the price you want.