Appliance Repair Expert

I paid a technician $100 to perform a diagnostic on my oven's broken gas valve. He correctly diagnosed the problem and provided me a quote to repair for $616 pre-tax ($280 labour and $336.80 part). The cost of the part seemed excessive based on my own research and so I sought a second opinion. I ultimately chose the second company and paid only $355 pre-tax (labour similar at $260 but part was only $95). My oven now is back in working condition and I feel like I paid a fair price and did not overpay.
I would warn others to do their own research before engaging this company as it appears they either are not efficient at sourcing parts or the cost of parts are inflated.