Just wondering how much you figure the value of it is, because the stickers are not applied....? 50$ more....? 100$ more....?
Personally I'd say since you can buy repro decals for about $90 it's about even. Easier to clean without them on but 30 year old glue is pretty much shot at this point.
The important thing to me is to have all the decals in the correct spots and the decal sheets are pretty beat up after 30 years. The glue is all leaking out from the smaller sheets and, for example, the missiles will likely need the ones I applied removed, cleaned of the remaining glue and re-glued pretty soon since they're already falling off.
It also looks like maybe 10 decals are missing and my be stuck to the back of another decal sheet still with the seller (He had a LOT of decal sheets and they were all sticky). I've contacted him to see but if they're not there I'll likely have to shell out $90 just to complete them.
In that case I likely won't use the vintage deck decals since they're coated with some wrinkly clear vinyl layer that, frankly, will look like hell once applied. I've never seen Joe stickers like them. They must be so they withstand having toys drive over them.
By FAR the best thing about having the decals come unapplied is that the original owner saved the decal application instructions. Those along with the Canadian blueprints are worth about $100 more and they're in great shape.