I am going to take a guess that those are a seasonal item.  If they met costcos sell thru expectations they will likely be back in April/may...that's my best guess at least!

I can't believe it either.  Just went to Costco over the weekend.  These are (were) great balls at a great price.  What's worse is that they replaced them w/ Calloway Black something or another.  The horror. 

I was at Target on Sunday, and they had a ton there.  Might want to check them out.

Other sporting goods store that are not "pro shops" (not like Dick's that are) may also carry them.  I don't know if McSports is a regional or national chain, but they have TD as well as previous versions of NXT, NXT Tour, and DT Solo.  And none of the current NXT Tour/NXT Tour-S or DT Solo versions.

I also seen them at Dick's Sporting goods for that price..Good deal!

the Tour distance is not a current ball in the titleist lineup. I would suspect that once they are gone you will not see them again....

Was at Target yesterday and they had Tour Distance in stock.