Re: 7.5 HP gamefisher
Buying parts from Sears is a convenience deal, really. You can look at the exploded views and parts diagrams, along with the parts lists, and can order directly.
Prices are higher than at other sellers. You're right. But, time is also money.
Here's how I see it. Sears is good enough to provide the parts diagrams we all use for their outboards, even though they quit selling outboards a very long time ago. I support them for that reason. If prices are outrageously higher, I wouldn't buy from them, but if nobody buys parts from them, those parts diagrams are going to disappear.
You'll notice that I give several sources for parts when I write about these outboards. Sears is just one of them. It's a valuable resource. Different folks make different decisions.