Number 1, is the bike in running condition (can it be started)? Garaged for 7 years I'd say no so... #2, when was the last time it was operated? #3 has it been properly stored (elevated, with fresh oil and fluids when put away etc)? #4 chances are it will need new filters, coolant, oil, tyres, rear dif fluid, fork oil, brake fluid even if they were fresh 7 years ago. Brake parts, fork seals, hoses, cables, anything rubber (carb boots etc) are suspect after sitting that long...$$ and availability could be an issue. Blue book in Montana shows "clean" (and that's assuming it is runable as is) $2200. Personally, I wouldn't go higher than $1500 if that. Expect the unexpected if the bike is in less than fantastic shape to make it streetable.
Case in point, my b-in-law just bought a '97 VTR1000 in solid running shape, no damage low mileage for $2500 Cdn and that's a 15 year newer machine. No it's not a Wing it's a sport bike, but...