If the lights are $60 at a box store...they are likely just as higher or higher at your electrician's favorite supply house AND he is going to mark them up to you.
And, he has to mark them up to you. He's taking several risks when he buys them, like you may change your mind and want to return them, he may get them and you decide you don't want to do the project, he may install them and not get paid by you, he may get paid but a year from now you call him up and want a refund for whatever reason, etc.
If he sells you the lights, he's got risk. He needs to be paid for that risk, or he won't stay in business long.
Phil