The NADA Classic/Collector car price guide show the current value of the GNX like this:
Low retail = $48,070 Average retail = $77,880 High retail = $113,520
They tend to keep the site reasonably up-to-date and in-line with current market conditions. Back in April they showed the GNX approximately 11% higher in value than they do today. The prices seem to still be slightly optimistic, but they aren't too far off reality in my opinion, maybe +/- 5-8%.
You need to read their Low/Average/High value descriptions to understand where your car falls in the category.
Here's a link:
1987 Buick Regal 2 Door Coupe GNX price report at NADAguides.com
Low retail = $48,070 Average retail = $77,880 High retail = $113,520
They tend to keep the site reasonably up-to-date and in-line with current market conditions. Back in April they showed the GNX approximately 11% higher in value than they do today. The prices seem to still be slightly optimistic, but they aren't too far off reality in my opinion, maybe +/- 5-8%.
You need to read their Low/Average/High value descriptions to understand where your car falls in the category.
Here's a link:
1987 Buick Regal 2 Door Coupe GNX price report at NADAguides.com