residential ac guys, price question

my ac quit cooling yesterday evening called ars due to no crazy fees for sunday service, pressures were low, he added 2 pounds r410, charged 80 bucks service fee, i knew that upfront, then before charging system he said r410 is 65 bucks per pound, how coud i say no i knew a drum of 410 is only $120.



my question is what do yall charge per pound after service charge,



after that he said he recommends leak check, $100 for that, he already had covers removed for inspection, and he said they do not use dye.



any thoughts on that?



thanks