How many times have me made decisions based solely on price? Are you getting good value for low price? Often cheaper quality products are being offered at cheaper prices. Same thing goes for service. The skill level of the person working on your vehicle is very important to the success of the repair.
Quality parts do last longer and often carry a longer warranty. Do the parts going on your vehicle meet or exceed original manufacturers specifications? Does the person performing the work take pride in their work? Quite often good shops will stand behind their work by offering good warranties on parts and labour.
Remember you always get exactly what you pay for. Make good choices and don’t focus on price. You may be disappointed.