This is the cheapest the Switch (and I think) the XBox One versions have been. The PS4 version was just $19.99 the other day as the DOTD.
Switch:
https://www.bestbuy.com/site/crash-bandicoot-n-sane-trilogy-nintendo-switch/6219578.p?skuId=6219578
PS4:
https://www.bestbuy.com/site/crash-bandicoot-n-sane-trilogy-playstation-4/6252374.p?skuId=6252374
XB1:
https://www.bestbuy.com/site/crash-bandicoot-n-sane-trilogy-xbox-one/6219579.p?skuId=6219579
If you can wait a few months, it will probably be a Black Friday sub-$20 title. If you want it now though this is a decent price, especially if you still have GCU.
Switch:
https://www.bestbuy.com/site/crash-bandicoot-n-sane-trilogy-nintendo-switch/6219578.p?skuId=6219578
PS4:
https://www.bestbuy.com/site/crash-bandicoot-n-sane-trilogy-playstation-4/6252374.p?skuId=6252374
XB1:
https://www.bestbuy.com/site/crash-bandicoot-n-sane-trilogy-xbox-one/6219579.p?skuId=6219579
If you can wait a few months, it will probably be a Black Friday sub-$20 title. If you want it now though this is a decent price, especially if you still have GCU.