Howdy,
As far as cost concern, in reality, the blue painter's tape and spray adhesive is the cheapest way to go. You can buy Elmer's spray adhesive at Walmart for a little over $3 a can, and a roll of blue painter's tape is $4, maybe $5, and will complete several projects.
Personally, I have never used the stick & peel, shipping labels, or any of that. I have had good luck with painters tape and spray adhesive. I have tried different kinds of spray adhesive, and to this point, have had the best luck with loctite brand adhesive. It has a lemon smell to it, and takes a light spray on the project.
The secret to spray adhesive on a project to be glued down is not to DRENCH it with adhesive. Just a light spray across the back of the project, allow it to get good and sticky, then place your project on the painter's tape. If you don't give the adhesive those extra few seconds to dry, your pattern will LIFT off the wood during cutting, regardless of what your blade of choice is.