Several months ago I started using E-Shop in Boquete for items I ordered from the U.S.
It turned out to be a good test of the different services. The package came into the David Multi Servicios location in about the same about of time as E-Shop. It cost right at $20. I have received larger packages at E-Shop and never paid over $!2. Several times it has been around $7.
UPDATE: I was sent E-Shop’s fee schedule.