Are the Super-tone horns waterproof? Looks like they are completely exposed to the elements, which is one thing that kills the stock horns.
Also if you don't mind fashioning your own bracket and wiring, you can get them on Amazon for under 35.00..
I haven't looked at the stock horns on the MK7. I replaced both horns on my MK4 and my MK5. They looked like the "snail" type and water could splash into the openings if you went through deep water. That was common on the country roads here. Lucky for me they all failed under warranty. A single horn without labor was $80 the last time I replaced one, and that was about 8 years ago.