I want to know what are the common features people are looking for. With the price to justify the scope.
My thoughts may be very different from others.
Customer management - a CRM system? or just a simple table just to keep some fields like email and contact?
Shop - just for a drop down list with id and name?
Equipment management - also another table? What are the fields? Some simple fields, you would add more fields your own?
Are there categories for the above? For example, you have different type of customers, Shop by State, City or Region and Equipment is categorized by Department or types?
Ticket Management - Customer can create own ticket or only created by a support officer? Allow upload of images? Keep track of SLA? Email? Live chat? Export or print?
Assistance management for Equipment meaning? is it like warranty or contract agreement?
Every ticket is chargeable? Cost Centre?
Reporting and Dashboard? What reports are required? What summary you want to see in Dashboard?
User Access Permission and Roles?
If the poll closed and less than 10 people are interested then I am not going to build one. I don't want to create something that low in quality or useless and sell like $5 for 2 people, or I have spent like 3 months and more to build with high quality features and then also sell very bad.
From my point of view, a small project is better, with the aim of containing the purchase cost
At the same time it should have the important functions for data entry, modification, deletion, and above all the search for the desired records using all the available fields
Once the project includes the basic functionalities to perform operations on a single data set, then the user can autonomously replicate the same operation also on other data sets
For example, let's assume that the final goal is to create a project that allows you to manage customers, tickets, scheduled interventions, reports, estimates, invoice
Is It will be sufficient to start with customers + tickets and allow insertion, modification, deletion, search on these two datasets
In this way the operator can easily extend the project by duplicating the functions already present