Welcome To The Boards, jvanhuis
I never seriously considered the shavettes myself. I knew they would feel different, 'wrong' and I wanted to stop using disposable blades, and that includes the shavette inserts.
$100, of even $200 isn't much when you consider that you won't have to keep buying disposables for the rest of your life. The qualityof the shave achievable will make it all worth it very soon anyway.
Most guys who don't stick with the straight do so because they don't have access to the important information and support provided here. I say get a shave ready razor from a member and go for it.
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