⭐ Merited by fillippone (2)
That's right. What I might recommend is to have your seed splitted in 2/3 way, which means you can read your seed while having any 2 out of 3 copies. Yet with only one of copies you cannot get the seed as it will require you to crack 8/24 of seed which still will take at best months if not few years. This requires having 3 safe locations, possibly different physical addresses. You should have them in a place where you can check each few months if it was untouched, for total peace of mind. It's easy to do, but If you need details I can give you some instructions if you PM me. I'll probably make a tutorial at our site in the future too.
Ok. You suggest splitting seed phrasee into 3 parts and storing it in 3 different places. It turns out, 8 words for each coinplate. Then it would be right to add mini-coinplate (like coinplate split - I don't need thanks for the name I came up with for your new product line 
) to the assortment of your store. A smaller version of coinplate with space for 8 words and offer them in packs of 3 (for 1 to 8, 9 to 16, 17 to 24 words).I don't undertake to discuss the correctness of dividing splitting seed into 3 parts, since, for example, Pmalek believes that this is a bad idea (not only he thinks so).
~snip
Let's leave the right to choose exactly how to store their seed phrase, splited or whole for the owners of it personally.I want to say the following. If foggoat voices this method, then it would be logical to offer his customers to purchase a product that allows you to split seed into 3 parts. Those samples that are available in the https://getcoinplate.com/ are not suitable for this (it contain space for 24 words) and buying 3 coinplates to fill only ~30% of the surface of each I consider wasteful. In total, 3 such plates will cost ~200-240 euro (Punch version or Alpha). Offer buyers 3 mini-coinplates for 8 words for the approximate price of one coinplate (~70-80 euro). Then this will be useful, otherwise it turns out that you offer this method of spliting seed into 3 parts only in order to increase your sales (selling 3 plates is better than 1, right). No offense. I expressed my subjective opinion.