I recently ordered a wheel stand from them and during shipping I learned it wouldn't be compatible with my h-pattern shifter. The package was 20kg. I emailed them and they told me to refuse the shipment and I'd be refunded minus the original shipping cost. I emailed them again to ask them if I'd be charged the ship-back cost as well (if you refuse a shipment, the shipper is charged for the ship-back cost). I asked because the wheel stand was $200 and the original shipping plus the ship-back shipping would have been about $70, so I probably would have just kept the stand in that scenario. ME replied and they repeated that I'd be refunded less the original shipping cost. When the credit processing was complete, I received an email confirming I was only charged for the original shipping cost.
In short, ME paid for my elementary mistake. I don't think the customer service gets much better than that.