Stock SC1000 has been ranging from ~$12k to $30k depending on condition, mileage, and year (2006 going for slightly more than biposto / wet clutch years ‘07+
Gently modded SC1000 — tack on about $2k+ to the aforementioned range.
Highly modded SC1000 have variable ranges, from $12k to $35k depending on how much of a crime the mod job was. Some people take their naturally beautiful bikes, and mod them until they look like a Hollywood poster child for too much plastic surgery. It’s a damn shame.
PS just plain goes for $35k+ now.
GT’s are less sought after and more available, so chop about $5k or more off then SC1K prices.
1000S and LE are… priced midrange between SC1000 and PS, leaning heavily toward SC1K prices.
The prices of 2019 & 2020 (or earlier) no longer apply, so don’t expect those prices again. Inflation has been ~17% (real, not reported) for a couple years now, and people have been scooping up bikes, so there are fewer. Thus, expect SC1K (for example) to go for twice what they did two years ago.