I started updating my asset pack to Unity 5. So far it is working great. I am using Substance Painter to paint my textures and they have export settings for Unity 5.
You should update the asset store pictures.
I don’t like the rust, it is too much like some abandonned boat instead.Perhap a more subtle rust only or scratches instead.
We don’t see material variety, all things are very specular only in the cockpit view, i find 35$ is a bit much for this asset not polished enought without variations.
Good luck.
I’ll store pictures will be updated once the asset is approved by Unity. The new pack will have a clean not rusted version and a worn scratched version. Both will be able to be any color of choice using the albedo color slider. What do you think is a fair price?
Having 5 different ships 35$ would be ok i think, perhaps same cockpit but with different shapes ; as a modeler it’s not difficult to take your base and modify it by extruding and moving faces. People buying your unique 3D model will have a limited use of it , while 5 different shapes and you can use them in a racing game or futurist town populated with these ships.
Always think in how can your buyers have some usage of your assets 
(to make them happy)
I agree with you that having more variations would benefit the customer and allow for more variations. I will have to disagree with ease of making variations as you stated. If you extrude and move face you will have to start a new texture bake which is not simple. So it would take 5 different High Poly props baked to 5 different low poly bakes and textures. These are not simple tasks. I will need to consider the time it takes to do this into the price. Thanks for your opinion. Always welcomed.
Making new seams , and baking is not complicated. I don’t know what tools you use, but this is simple if you have a good retopo tool as you modify the retopo only on the modified part.
Anyway good luck.
I’d have to agree with zenGarden on this point. The assets are nice and clean, but if I was putting these up on the asset store I’d probably set the price at 10 dollars.
Especially for mechanical equipment - for your next asset really consider allowing the customer to have modularity in the asset. This gives another incentive for more people to purchase the asset because they can add/take away and alter the base model - so there use with the asset is a little unique and everybody who purchases the asset isn’t looking at the same thing.
Props for offering alt diffuse/albedo using the standard shader color slider.
