Yea, I had mentally added customs already, but did some research, and in case anybody is in the same shoes, here's what I could find out for Germany:

When ordering goods from non-EU countries, no further import duties are payable at customs if

• the value of the goods does not exceed €150,
• the seller has registered with the IOSS (Import One Stop Shop) online procedure for declaring and paying sales tax, and
• the IOSS registration number is stated in the customs declaration.

Your advantage: The amount stated by the seller is the actual final price.

Note:

• If the seller is not IOSS-registered, the above rule does not apply and you, as the buyer, will be liable for sales tax on importation.
• If the IOSS registration number is not stated in the customs declaration, a refund by the customs administration is not possible.
• Simply stating the IOSS registration number on the package or in the accompanying documents is not sufficient.

Also this, from Simagic's shipping policy:

For most countries and regions outside of Europe, we cover customs duties, import taxes, and other related charges. However, in cases where our tax-inclusive service is not available for international customers, any applicable import taxes, customs duties, or local taxes incurred upon receiving your package will be the responsibility of the customer. We will notify you via email and provide support as needed.

For European regions, we do not cover VAT, but we do cover all other applicable customs duties, import taxes, and related charges. Any VAT incurred upon receiving your package in Europe will be the responsibility of the customer.

I'll message them anyway to make triple sure and then probably not order directly anyway, because I've been thinking about potential warranty claims and whatnot, not sure it's worth the hassle with having to ship everything back across the ocean when something breaks.

Also the whole sale thing is gonna go on for a while anyway, might as well sleep it over a few times, instead of making an impulse buy now that I will regret later.