Recently I was given a Weber Spirit e-310 grill. It needed the following parts: ignitor, flavorizer bars, and lastly burner tubes. Burner tubes weren't shot, but I wanted to replace them while in there. After looking at both Amazon and Ebay, I ordered the needed parts. I chose the GasSaf flavorizer bars from Amazon ($19.99 instead of $52.99 for genuine Webers.) Ignitor from Ebay ($13.46 from Bob's grills, instead of Weber for $39.99.) Burner tubes from Amazon (DELsbbq $22.59 vs $68.44 for Weber part. Weber parts totaled out to $161.42 vs $56.04 for generic parts. Sales tax would have added another seven bucks to genuine Weber parts. Now for the kicker! I ordered SS flavorizer bars instead of steel, ignitior had EXACT same numbers on back, except for manufacturing date, and burner tubes came with Weber instruction pack included. So I saved over $100 by NOT BUYING genuine WEBER parts, even though two out of three were actually WEBER parts .