What's a fair price for brand new set of OEM take-off tires from a new Gixxer 1k? Fair price for set of new Dunlop Q3 Plus?

Hey All- 🖐

What's a fair price to pay for a take-off set of Gixxer 1k tires, in brand new condition?
How about a new set of Dunlop Q3 Plus?

Dunlop Q3 Plus are the best tires for street riding currently?

Fair price to have either set installed?

Thanks in advance