Looks like the prices estimated for the two guns are the following:
CA M249:
-Hop-Up: ADJUSTABLE
-Weight: 6,600 g
-Capacity: 300 rds
-Power: 280.0 fps
-Battery Size: Custom 8.4v Battery
-Shooting Mode: Full Auto
-Metal Feed Cover
-New Design Gear Box
-Bipod For CA249 Series
-New Design Hop Up Chamber
-Barrel Length 510 mm
-Barrel Caliber 6.08 mm
Price (USD): $830.00
CA CQBR Armalite m15:
-Modified Wiring Switch
-Special Forces Crane Stock
-Imitation Gas Tube
-7mm Metal Bearing Gear Box
-Metal Detachable Rear Sight
-Easy Disassembly Metal Body
-Colorful parts inside the Gear Box
-Barrel Length 280
-Barrel Caliber 6.08
-Hop-Up: ADJUSTABLE
-Weight 3,000 g
-Capacity: 300 rds
-Power: 280.0 fps
-Battery Size: Custom Large Battery
-Shooting Mode: Semi, Full Auto
Price (USD) $457.00