Which prefabricated house company offers the sampling BEFORE purchase?

Allegedly, there are prefab house companies that offer the sample selection BEFORE signing the purchase contract.

You could suggest to a preferred provider that you pay for the sample selection and, if a contract is concluded, of course get this amount reimbursed.

Of course, this only makes sense if you have already narrowed it down to two or three providers.

Standard is not junk either. And if one already knows that the daily business, for example, works better with [Villeroy & Boch] than [Keramag], one should write it down beforehand and take it into the negotiation.

Can you really say that so generally? First of all, it makes a significant difference whether you take a standard floor plan or have a self-designed house built by a prefab house company.

I wrote "equivalent"!
Yes, you can. I have been here for 6 years now, have read, compared, and observed quite a bit.
Only a prefab house can rather achieve a lower KfW value. But not in the inexpensive sector either.
Therefore, my statement remains. No one has to believe it.

Secondly, most prefabricated houses cost the same everywhere in Germany,

Where do you get this information from? Danwood Contra Weberhaus?

That is at least my assessment, but of course it could also be nonsense

No information, just an assessment. Honestly, I haven't looked into it. But that's why I'm asking. If your view is well-founded, then I believe you.

@TE Try it with a small general contractor. They are often more flexible. They work together with Sanitär Müller, Elektro Huber around the church tower and do not have a fixed selection of 4 shower heads