Seat Broken problems of the 1998 Jeep Cherokee

1998 Jeep Cherokee se 2-door - front driver's seat frame broke at the front-left point where it mounts to the rails assembly. The seat had become a little wobbly in bumpy/uneven areas on the road (I live in new england where there are a lot of hills and the roads are not flat and smooth) and one day, coming over the bump at the end of a construction zone the seat made a popping noise and I was jarred toward the middle of the car. Now the seat totters from side to side depending on what way I am turning or the angle of the road/bumps. To correct this I will either have to purchase a new seat, which will be pretty difficult considering that this problem is very wide-spread so there are basically none of these seats available, or I will have to weld the seat frame back together where it broke. The last alternative would be to purchase an aftermarket seat, which is a little pricey at $250usd.