These are up for sale again on eBay for $60. Just search Bttf Marty shirt and it should be the first one.
https://scontent-cdg2-1.xx.fbcdn.ne...=9d0488de989d648df0f720c761b60ec6&oe=571AF1FE
Thanks for posting this. I saw his shirts up on Ebay a while back, but all he had was size XL. I just ordered a size S. Pretty pricey, but I'm hoping the quality and accuracy justifies the cost. According to the stock photo, the lighter-color grey lines look almost perfect... much better than even the official Shah Safari repro.
I read what you said about the shirts fitting a little large. I'm thinking that a size S might work perfectly, then. I figure I can always try to shrink it in the dryer or even take it to an alteration place to get it cinched up a bit if it's too big. It's much easier to work with if it's too big than if it's too small.