Sometimes it is better for others to learn just by trying. The longevity depends on how the person drive the car and the road conditions along with the quality of the coilover.. so it will vary.
The OP is looking for Raceland, unfortunately no dealers in BC but there is one in Canada.
It is out in Ontario (so you save on PST)
Euroline Performance is an Authorized Raceland Dealer « Euroline Performance