I got an Invisiframe kit for my bike.
If you tried to cut templates, then adjust them to fit, then cut the protective material of your choice you would either do a shite job, or it would take several days.
So take that into account when thinking about the price.
But certainly do the fitting yourself if your the carful patient type of person.
If your a ham fisted Gorilla with the attention span of a toddler, pay him to fit it.
I’ve also applied some clear protective stuff to my other bike myself – the results were poor.
The way the invisifilm stuff goes on with water means you can slide it about till its lined up properly. You can also squeeze out any air bubbles to get it bloody perfect.