Here is a used Marcus Bonna Case for Four Trumpets and Laptop.
Here's some info from MB:
"Contains protective storage area for your laptop computer or extra music.
Cases by Marcus Bonna. Marcus Bonna cases are completely handmade and unrivaled in regard to strength, compact size and lightweight. A fiberglass shell is combined with a durable and replaceable cordura cover. Backpack straps are included and most cases come with shoulder straps as well. Adjustable pads inside the case allow you to fit the case to your instrument. Marcus Bonna cases fit in virtually all airplane overhead compartments. Including: 2 backpack straps, mouthpiece pouch(for 3 mouthpieces)"
Brand new prices are all over $500 with the highest at $920 and these cases last forever! At $400 this is a great deal to treat yourself to an awesome case!
$400 + Shipping