By which I mean, how often could an average Londoner go and see one? How many hours would a laborer need to work to go with his family?
The cost of a show at the Globe Theatre between 1599 and 1613 was 1 penny for standing room in the "pit", 2 pence for a seat in the lower galleries, 3-4 pence for the wings of the upper galleries, and the prime seats (lords rooms) at 5 pence or more. An extra penny bought you a cushion to sit on and there was often food for sale just outside the theatre door. One penny was approximately the cost of a loaf of bread in the early 1600s, but bread would have been more expensive at the time. Calculating precise values is difficult.
Here are some common annual wages according to a Westminster statute in 1588:
Clothworkers £5
Fullers £5
Shearmen £5
Dyers £6
Tailor's hosier £4
Drapers, hosiers £4
Shoemakers £4
Pewterers £3 6s 8d
Whitebakers £4 6s 8d
Brewers £10
The underbrewer £6
The foredrayman £6
The miller £6
The other draymen £3 6s 8d
The tunman £3 6s 8d
Saddlers £4
Turners £4 6s 8d
Cutlers £4 6s 8d
Blacksmiths £6
Curriers £6
Brownbakers £3 6s 8d
Farriers £4
Glovers £3 6s 8d
Cappers £4 13s 4d
Hatmakers & feltmakers £4 13s 4d
Butchers £6
Cooks £6
This information can be found in The English Renaissance by Kate Aughterson, 1998.
At the time: 12 pennies = 1 shilling. 20 shillings (240 pennies) = 1 pound.
According to my own imprecise math and assuming 254 working days per year:
A glover earned 3.3 pence in one day. A saddler made 3.7. For a cutler, 4.3. The clothworker brings in 4.7. 5.6 went to the butcher, and the master brewer made 9.4.
A visit to the theatre was well within the means of just about anyone with a steady income.