If a re-lace is possible.. (need to have the correct spoke count and angles)... it will cost you $500 to $600 for rim, spokes, lacing, tire, and tube...
If you replace the entire wheel,... you have to deal with axle size, brakes and calipers (unless you lose the front brake)...
To me,.. a bike without a front brake is just butt jewelry...
I'll shut -up...
...
...
It's just too complicated and expensive...
...
Ooops!...
....
...