This one has some issues, but for what these go for, doesn't seem bad priced. Bids today 2/16 around 3 pm https://bringatrailer.com/listing/1985-buick-grand-national-4/
That seems to be well bought for what should be a nice summer driver, fix the A/C and its good to go, or enjoy it as is. I owned a slightly used 85 for about 3 months until the actual insurance cost caught up to me, not what my agent quoted me! I was in my mid 20's, had several tickets, and 1 wreck on my record at the time!
As the owner of two 1986 GN's and a 1987 GNX, those two years are lightyears ahead of 1985 and prior years. The one shown above is incorrect in many ways, the badges, the wheels, etc. If that sold for $22,000 and change, I better put mine up!