24 months · example budget in USD
A subscription is not the only running cost.
EXISTING SOFTWARE
$23,600
$2,000 setup
+ $900 × 24 months
CUSTOM APPLICATION
$26,400
$18,000 build
+ $350 × 24 months
Custom costs $2,800 more
under these assumptions.
under these assumptions.
Then add migration, hosting, usage charges, staff time and future feature work to both options where relevant.
Before tax. Define what the support allowance covers.