Answer :
SaaS means a Software which automates a billing processes on a recurring basis.
- The SaaS billing involves a process if entering details manually, cross-checking, printing of confirmation slips, tracking of payment records, etc
In general, the SaaS billing are used to automate things and make life easier while billing a transaction.
The widget factory relates to jQuery.
- The JQuery is a Javascript library used for document traversal and animation and an example of is widget factory.
- The widget factory is technical and needs programming expertise.
In conclusion, the widget factory is expensive because it is an advanced plugin system.
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