With the same functionality and similar physical design ? Probably no less than $150 for at least 5 years from it's release and it still never happened with the 3DS ... (sure there was the 2DS which retailed for $130 initially but it had no 3D and lacked the clam shell design so the closest thing we got was the New 2DS XL which released less than a year ago)
There's a good chance that it might not ever go below $200 either ...