Hey Guys, I have noticed that when there is a free postage by Catch of the day, most of us (incl. me) try to look for very cheap items, and some of us go through the whole website to post a good deal with cheapest price and free postage. I kind of found a way around it, so I thought I will share with you all. (Hopefully COTD won't change their search settings after this :/).
In order to find everything that is on COTD website, go to the top right corner in search bar, type in "*" without quotation marks. Then on top right corner under the search bar and next to filter, sort the items by "Price Low to High". I have not yet found a way to exclude "sold out items" yet. Enjoy the Free shipping!!
Thanks to OP!
Cheers