To price out a Dio without 1st talking to you in great detail is an impossible task as every build is completely different. Every Diorama I build is a 1 of a kind and will never be duplicated. I will give you some samples and explain what I would charge for something similar.
"Earls Oil" Kit Build
This is a basic build, its basically a "Stock" Build as there are no additional detail kits with the exception of the tree's. This would be priced at $100.00 USD. Truck would not be included for this price.
"Bulls Salvage" Kit Build
This particular Dio is built on a 16" x 16" 1/8th plywood base. The cost to purchase a dio similar would cost $285.00. Look closely at the pictures to see the detail items, if you have ever bought them, you know they can cost a crazy amount of money
To discuss a custom build or if you require additional info, dont hesitate to email me.