RTR is awful. I tried them for two months, they never had any of my sizes - and more seemed available under the less expensive membership than Unlimited.
I've been trying to cancel unsuccessfully - it's nearly a scam to ensure you get hit with auto renew. I've called, they always prompt a 10 minute wait time and if you leave your number, they'll call you back hours later when you're likely unavailable. If you don't pick up, good luck ever reaching them. I've sent about 10 emails to two different addresses and have heard nothing back in 5 days.
Avoid this service at all costs.