Ty sketcz. :-)

When you add the coupon there is no message telling that you can´t use it(like when you try other bundles).and you can see that the discount is applied($1.80 for 2 bundles). But the problem is when you try to complete the purchase that you will see a message telling you that you need to spend at least $2. and I tough that you can complete the purchase XD

With other bundles if you add that coupon you will see the the error "Excluded from voucher"

I tried again adding 3 bundles to cart (2 of GunCraft Complete Bundle Edition and Tank Battle Dollar Bundle) each one $1(total $3) and if you add the coupon the price is $2.80 and you can continue to PayPal and on PayPal you can see the total $2.80 so you can use the coupon but not as I mentioned because you need to spend $2 or more so you need to add other thing XD

For me it says the bundle ends in 13 days O.o