ive had my amp for awhile and i can tell its time to change the tubes, so can sum1 recommend me tubes?

i maily play punk rock but i also play some hard rock

my amp is a Traynor YCV40

also what is the usual price of tubes and how much would it cost to get them put in if i take it to a store?

Gibson SG
Traynor YCV40T
Digitech Grunge
Dunlop Crybaby Wah
Korg pitchblack pedal tuner
EXH Metal Muff
Sennheiser wireless system
Gear soon gettin:
Gibson Les Paul Jr.
Boss ce-2