I'TS COMING TIME TO REPLACE MY 3 MH BULBS-2 10,000 K AND 1 15,000K

IS IT WORTH SPENDING 100 BUCKKS A BULB WHILE EBAY HAS LORTS UNDER 40 BUCKS??????????
AY SUGGESTIONS WELCOME-SORRY 4 CAPS-I TYPE 1 FINGERED:eek: