I use the Debbie Meyer green bags and love them. They, too, only last a certain amount of time. I certainly feel that I get my $$ and use from these bags. They really do work and the money saved in keeping fruit/produce fresh is more than the cost of the bags.
I always repurpose those types of containers for other things once they are not food safe. I use my old L&L from the garage to the craft room to the laundry and storage rooms.