Chances are the pin would never have to come out. The crack can very easily be fixed by pulling the stock; use a knife blade to spread the crack just a little; stick a toothpick in to hold it open and work in some Acraglass then use some heavy rubberbands to wrap around the head to squeeze the crack tight for about nine hours.
Then it would be wise to look for any non-shiney spots on the wood that meets the receiver; they are not making contact which is probably why the crack happened. Just a tiny dab on those spots; put stock back on and draw fairly snug. Take apart no sooner than nine hours and check. Don't forget to use release agent on the metal. It all comes in a kit from Brownells.
Here is how I Acraglassed a 5100 (311) receiver for prevention. Channeded wood out of the radiuses for the hammers with a Dremel burr bit, the inner side panels and the radius where the rear post of the receiver meets the wood the filled with Acraglass.
$250 wouldn't be a bad price, but I would try to get them down some, pointing out the 'problems'.