so this looks pretty good?

TRACKER III 8 CHANNEL 72 mHz PLK13025 WITH SEEKER 6 6ch RECEIVER FULLY COMPUTERIZED, SYNTHESIZED R/C SYSTEM WORKS WITH ANY FM RECEIVER INCLUDES CHANNEL LOCK OUT IF FREQUENCY IS BUSY EASY TO PROGRAM BUILT IN SCANNER, MODE 1 OR 2, 99 MODEL MEMORY, ERGONOMIC CASE ALPHA MODEL NAMING, 7 MIXES + V-TAIL, FLAPERON, ELEVON, UP/DOWN TIMER, ENGINE CUT OFF, DUAL RATE ON SLAVES, EXPONENTIAL, TRIM SAVE WITH MODEL, 1024 STICK STEPS, ADJUSTABLE STICKS, FREQUENCY SAVED FOR EACH MODEL, DIGITAL PROGRAMING, TRAINER CORD AND SIMULATOR COMPATIBILITY, MEMORY STICK FOR UP GRADES, WITH SEEKER II, 900 ma BATTERIES 5 YEAR WARRANTY SEEKER 6 6ch 72 mHz SEEKER 6 ultra narrow band DUAL CONVERSION, FULL RANGE Tolerances that decrease the performance of other radios. Specs: Size: 1.5 x .875 x .5 in. Weight: 0.5 oz. ( 14 g ) SYSTEM INCLUDES: Charger, switch harness, set switch, 900ma nicad for transmitter 900ma nicad for receiver 1 standard servo

$180.00

why would a 8 channel radio come with a 6 channel receiver?