I wouldn't say you'll have to spend that much. When the wheels were listed at Tire Rack I think they went for $149 USD each.
For comparison I just bought 4 SVT Focus wheels (17x7) for $200 CDN each at my local dealer (through FRPP)
If all else fails you could always get the current wheel repaired, or watch the CEG classifieds and EBAY as E1's tend to pop up from time to time.
Bridge