Fifty bars may be more than enough for your new small market. Even in large attendence markets there are many times I do not sell 50 bars even though I take approx 300 to each weekly market. If a person wants a handmade soap and they are hard to come by in your area they will find one to buy. Not sure what price you are going to ask for your soap but if you were to sell out it would result in $250-$350 in sales. I could be realistic to sell out in a new market if there are not many markets in your area or soapmakers. In my area it is not realistic other than holiday time. So I would not worry about going to the market. It can also take months for markets to either pickup or completely die out The point is don’t sell soap that isn’t properly cured. You’ll hurt your reputation and people won’t come back. This is very very important if you want to establish yourself in your market.