yeah, that is steep for 1 brake line and labor...I never trust a shop that advertises that they will match the best price because all that really means is they know they charge a lot and aren't afraid to cut into their profit margin just to get the business.

Almost all good shops will work with you if they can in regards to price matching etc, but the good ones don't advertise it.

for reference, I got the parts for stainless steal lines on all four brakes for less than that...