Absolutely not true - I'm not focused on anything just trying to learn from past mistakes and so far not impressed with your "proper e-bike dealer"
Perhaps its time to move on as its starting to appear to be a "dealers site"
Of all of the posters that have given their input, advice and discussion to this topic, only one "dealer" responded. That dealer made no attempt to sell you a bike or even give you the answer to your original question. Yes I am in the business. I have not said you should or should not buy a Haibike or any other brand for that matter.
All I and others did was answer your questions and discuss points. Myself and other simply pointed out the pitfalls of buying from ebay and the advantages of buying from a dealer. You asked about warranty work and what would happen if you broke down. The answers did not sit well with you. If you think that buying from BMW will satisfy your concerns and that you will be looked after where ever you go, please do.
While Wander's last remark may have been a bit pointed you have indeed talked about buying cheaper, from ebay and from BMW. Again , if that is your pleasure, that is your choice. However he is only givng his opinion about buying from a "proper e-bike shop".
Proper e-bike shops will give you service and sales on the different brands they sell. They will take the time to explain differences and similarities. They will let you test ride. All the words we say on this forum will not be able to match a test ride on the bikes you have mentioned.
Most importantly "your" shop, should you choose that route, will look after you. If you buy a Bosch/Yamaha powered bike from ebay or BMW then, in my opinion, they simply do not have any obligation to look after you. Most will help you if it is a bicycle related repair. If it is a system issuse they may still try to help but most will likely direct you to contact the seller or Bosch/Magura.
Yes there are dealers posting on this site. However, there are far more people like yourself that come here for answers. There are also people here that have passed on their experiences, good and bad, after buying from a dealer, ebay and used along with many, many more that are going the kit route. I do not see any hidden agenda here, I see it as a resourse. Sorry you feel this way about it.