I have sent a pm saying why.
But here is the reason for everybody to see.,
When I deleted the ad there were no prices against it. That is why. If people want to have an sealed bid auction then this is not the site. How long are we supposed to let people leave their stuff up before we delete it? Well other forums would just delete it immediately. Your ad was left for a number of hours.
It has happened enough times on here and every forum I am aware of operates the same policy
If you want to sell something, put a price against it.
If you want an auction try Ebay.
I will apologise because by your pm you said you had put the prices on. I can only say that when I pulled it I didn't see any prices. If I had I would have left it on.