I dont know how they come boxed when you purchase them, but I would think that the Post Office has a Priority Mail Flat Rate box that would work and those would be under $10.
The box size needed for the horn is the $11.45 one..
Ok folks! Shipping prices are being individually done for the best price. I cannot use the box from USPS because it's the same price for all ($11.45),
and some will save close to half by doing it this way. The break down will be in your message. Please review and send a check with your shipping info
for the total. I'll post you paid and send a message acknowledging payment. So far, it's going smooth, I plan on it to stay this way! Great communication with
the manufacturer, and with you all!