$150 is such a waste of good money. You're probably already convinced that it's authentic, so the only reason you might want to get a cert is if you wanted to sell it in an online auction. I've only sold things in an auction once, and I told the auctioneer, if he wanted a TPA cert, he could pay for it himself (which they did). Otherwise, I ain't blowing a good $100-$200+ on a questionable opinion.
Just my opinion, but I'd rather keep $100 and buy some autographs.
