Bad communication and customer service
It took a week or two for me to do my impressions, due to a family medical emergency. However, I dutifully did all four trays. I took them to USPS the very next day. Nothing from Rhiannon for a week. I emailed to ask if they received them. Nothing for 2 days. I emailed again. Still ABSOLUTELY NO communication, except that PayPal said Byte had refunded my money. What??? I wanted to do this, but the communication was terrible.