Holo Audio is pretty clear about cancellations both at the time of order, and on their Terms and Conditions page:
"Refunds on Holo Audio, LCR-1 MK5/MK4 Phono Stages, and any other special order items.
"Refunds on Holo Audio, LCR-1 MK5/MK4 Phono Stages, and any other special order items.
- Only accepted within 48 hours after purchase, refunds/cancellations may be made."