What would you pay for a salvage ruckus?

[blusat]

Hey everyone, this is my first post. I've been wanting to build out a ruckus for years and finally have the opportunity. Done lots of mechanical work before. Classic motorcycles and 4x4s and stuff.

My friend has a scooter rental company, and she has one insurable ruck with a busted engine, and one totalled ruck with the low mileage engine intact.

Question is, what would you pay for them?

I can't find any similar scoots for sale online to compare. I would lowball, but it's a friend so I would like to be fair. Any info is appreciated.

Thanks