GameFly offers a Movies only plan, and below are the promotional introductory prices:
1 Disc Blu-ray & DVD, $6/month for 3 months, $9.95/month after
1 Disc 4K Elite, $9/month for 3 months, $14.95/month after
2 Disc Blu-ray & DVD, $9/month for 3 months, $14.95/month after
2 Disc 4K Elite, $12/month for 3 months, $19.95/month after