Just get a good fork for it. Carbon forks cost money, they just do. If you see something that is super cheap you should be worried about sketchiness, I would. Especially if they are trying to lure you in with fake logos or a similar name to an already existing and potentially high quality product. Is eBay or Alibaba (and his 40 thieves) a bike shop, if your answer is yes then seek medical attention, if no you are correct and you have to now ask yourself do I want to purchase a bicycle fork from someone who is not a bike shop and doesn't know bikes?

Also if you are regularly transporting bikes you should get a hitch on your car so you can get a hitch rack and carry them in a bit more security potentially (granted there are plenty of cheap hitch racks and plenty of less then ideal designs).

Whisky Parts Co. makes some reasonably priced full carbon forks and I have one and am quite satisfied with it. Ritchey also makes some alloy steerer tube versions that are reasonably priced and would work nicely if your goal is money saving.