APO Product Options, Variants

I use this app to allow customers to add embroidery or other customizations to their products.
This App allows you to:
charge per character
have multiple templates which can 'overlap'
add images for your custom options (font or color etc)

Install was done by them & turn around was very quick
Price is great! I used to have an app that charged 3 times as much with not even 1/2 the features & capabilities

Doesn't seem to slow page load speed!

My only critique is that they can work on upgrading the item assignment aspect to have more logic / automation.