I have bought parts from MX5parts over the years. I don’t normally fault them. For my most recent purchase, importing a radiator from UK to France, I have had a rotten time gauging the estimated delivery date which no person or app was able to provide accurately (MX5parts, their chosen logistics handlers, the postal services moving the parcel). I’m fairly sure it’s because of Brexit, there’s some delays because of new procedures. The packaging wasn’t the best, the top of the box was open on delivery, originally closed by large staples, without tape. Inside, the part was held in place with two thin polystyrene supports, no other protective wrapping. Thankfully there were no loose parts in the order.