Hard to say what $$ value it adds as it is not evidence of your vans life but that of some other car. Cool stuff to have and would look great in the glove box or in photos on ebay when you're painting the 'one owner from new' picture. Id pay $100 for the lot. As I said looks good in the glove box and period specific. Hopefully if/when you sell the car the buyer wont check your 'service history'