Eh .... good point.
I once received a free NASCAR kit. A dear friend was pressuring me to build ... my first NASCAR model.
So, I took the free Lumina kit and embarked on the project.
I remembered seeing the 'way cool' aftermarket fuel filler kit, so I bought it to install in my free model.
Then I realized I had to open up the trunk to show it off, so I bought the photoetch trunk hinge kit.
Then I realized it looked odd to have the trunk hinged but not the hood, so I bought the hood hinge kit.
That necessitated the hood pin kit.
Then, with the hood opened, I had to have the braided hoses and fittings.
Which looked weird without the brake duct kit. Then I discovered the killer photoetch grille kit. .... .... and on and on it went.
Before I knew it, that free kit had well over $200 worth of aftermarket goodies on it.
That was many years ago. It's still the most expensive model in my build collection!