Ive got most if not all the dies minus the sue & sam and Wedding ring.. No interest ..
As for the mats.. I use my accuquilt for scraps.. I cut whichever size fabric I have and match it with that size die.. I use it ALOT.. I go thru mats like crazy.... I buy a spare for my spare... The mats alone are not that expensive. But when I find a sale I pick up a few whether I need them now or not.. I'm going to use them eventually.. I make sure I have the 10x10 and kudos of back ups as when this one wears out from the intended die used Ill use it for the 5x10 dies.. The Cuts are in a different location so it works well for me.. Same goes with the 6x12 mats.. just down grade to 5x10 dies when the 6x12 dies have grooved it almost to death.. Also I have heard on low heat between towels to 'iron' the CLEAR mats and it supposedly refreshes the mat and heals some of the grooves as these mats are not self healing.. I have not tried this.. By the time im finished with my mat it looks like it went to war..
I love my GO.. my favorite die is 2x2..perfect for scraps, leaders and enders.. I hate the diamond & parallelogram dies.. I just cant figure for the life of me how to sew them to make them even!!! So until then they will sit in a clear box mocking me..