beryld,
The discount and vouchers being used on shaderstyle and others was a mistake. They fixed that. It is a resale item and it now says you cannot use resale vouchers on it. It also is not eligible for a discount. I had thought you could use a voucher on upto 50% of a resold item. This stuff is a bit annoying and confusing.

No need to think outside the box....
    Just make it invisible.