Fees vary from Lodge to Lodge..
There is an initiation fee on entry and in due course regalia will have to be purchased. The meeting is normally followed by a dinner, the cost depending on the venue.
There is also an annual subscription to the Lodge. At Petersham this is currently £265 which includes the dinner and wine at the five meetings a year.
Freemasons are invited to give to charity at each meeting but this should always be within their means and it is entirely up to the individual how much they wish to contribute.