Hi Doe,
SleepEZ is one of the manufacturers or retailers that is an invited member of this site (you can see the current list here). There is more about the criteria I use to invite a manufacturer or retailer to become a member here in this article and in post #2 here. I earn a referral fee when a member of the forum purchases a mattress from one of the retailers or manufacturers that is a business member here which is the source of the income that supports the time and effort involved in The Mattress Underground (which has been a 12 - 16 hour a day project for over 3 years). You can see the details on this page. Other than earning referral fees and the fact that I think highly of all of them (which is why they were invited to become members) I have no other association with any of the members of the site.
They don’t resell them to customers or use them in their layer exchanges but they have told me that they have no shortage of people that want to purchase their returned or exchanged layers.
There is more about the difference between them in post #12 here. The organic would be of most interest for those that either wanted an organic cover or more likely those that wanted 100% natural Talalay instead of the blended Talalay.
Phoenix