Hey Jet, I don't know if you have Dollarama down there in Wisconsin but I was able to get 'raised beds' made of a felt material that are 3' in diameter and 8-9" tall for $3.50 CAN. They folded out and when full looked pretty attractive too. Not sure what you could use for the planter trays but they are working well for me. Your garden sure looks great so no need for them but I am just mentioning them for both interest and for other people who may be reading this. I would post pics but it seems to want you to have them online and to link to a URL. I am not on facebook or anything so I don't really have a way to do that.
Pete