Rather than doing a proficiency check, I'd sooner people spent their money on another solo trip and then did their training trip with an instructor doing whatever they thought they needed to refresh. Hence the Examiner's fee for a reval. proficiency check is about the same as an hour's flying at our Club...
Remember - if you're an IMC instructor, an IF approach during the dual training flight (if it's 'out of phase' with the IMC revalidation year) will help the pilot to keep the cost of the next IMC rating revalidation flight down if he/she/thing is savvy about the dates.....