64x64 RGB LED Matrix - 3mm Pitch [192mm x 192mm] : ID 4732 : $59.95 : Adafruit Industries, Unique & fun DIY electronics and kits
SMD led indoor P3 RGB LED matrix Led Screen Module board 64x64 pixels High resolution 1/32 Scan led sign led display - Price history & Review | AliExpress Seller - Yao Cai
1BitSquared - RGB LED Panel, 64x64 pixels, 2mm pitch, 128x128mm
64x64 RGB LED Matrix - 2.5mm Pitch [1/32 Scan] : ID 3649 : $54.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Indoor LED Display P3 Medium 64x64 RGB LED Matrix Panel(7.56" x 7.56" x 0.5") $36.57
Compact P2.5 Indoor 64 x 64 RGB LED Matrix Panel — PMD Way