I converted the headlights on my car o HID a few years back and one of the bulbs died recently. I paid over $120CAD for replacements from absolutehid.ca after chatting with sales and within seconds of receiving I could see that, in addition to looking g more like 4000k instead of the 5000k I ordered, they didn't work either. So I packed them back exactly as I found them. "Support" told me there was a 35% restocking fee plus shipping ($20). Might as well say all sales final. I'm not an expert so it would've been really nice if sales would have said something to the effect of, "try another bulb first in case it's the ballast".
BUYER BEWARE: If you buy from absolutehid.ca make sure you have done your research as you can expect zero support after the sale.