No reason to think prices won't peak up in about 10 years. The best comparison I can offer is the Chrysler TC. Like Crossfire this also was a collaboration project with another automaker. 3 years ago a running example of a TC could be bought for around $3500. Today you can't touch one in running condition for less than $7500. What changed? Nothing, other than it's now over 25 years old. Same with Plymouth Prowler prices keep going up and it hasn't reached 25 years yet. Five years ago a Ferarri Testarossa could be had for $35,000. Now they start at $80,000 for a model with unknown service history. Again nothing changed other than it passed 25 years old.

Crossfire has a far more passionate following than TC ever did. It's virtually impossible to believe it won't become collectible, it's too much of a historical anomaly not to be. Definitely buy up what you can though, prices will still fall for a few more years. In an ideal world I'd have a place to keep a scrap unit for parts.