Where can I buy JJ Watt Texans signed stuff to buy?

I am a huge Steelers fan moving from Brazil to Houston in the next month and I am willing to have both JJ and TJ jerseys of whatever I can find/afford and deco.

Ps: luckily I bought tickets for oct 1st a month ago

Can you guys help me out? Nflshop doesn’t look good for it..

Thanks!