Historically, at least in the Netherlands (and it seems also Germany), you get the eye test free as "service" because before or afterwards you'll then look for a frame that you like. Of course, under GDPR (or previously the DPD from 1995) you are totally entitled to learn what data they have about you, but going to get a free eye test and then ordering cheap stuff online is just a jerk thing to do.
I read in this thread that elsewhere on the planet, they're not free, and then of course you get the values. Would be super weird to pay for a test and then not get the result. (Nobody likes vendor lock-in.)
I've done eye tests before and not gotten glasses because it turned out not to be necessary, but it always felt really shitty. I always asked how much it was, as an offer to pay, but was never asked to pay anything. I'd be in favor of paying for what you use to avoid both guilt trapping and hard feelings.
I read in this thread that elsewhere on the planet, they're not free, and then of course you get the values. Would be super weird to pay for a test and then not get the result. (Nobody likes vendor lock-in.)
I've done eye tests before and not gotten glasses because it turned out not to be necessary, but it always felt really shitty. I always asked how much it was, as an offer to pay, but was never asked to pay anything. I'd be in favor of paying for what you use to avoid both guilt trapping and hard feelings.