Seeing that we have a good response so far, this is a go.
Medieval Times Dinner & Tournament is a chain of dinner theatres which host royal feasts and tournaments featuring medieval games, sword fighting and jousting housed in an 11th-century-style castle.
I've confirmed with the booking agent that the cost is $51 ($39.95 + tax and gratuity) for groups of 10 or more (this price includes dinner, and is normally $72 per person).
If you pay in cash or by cheque, the cost is $51. However, if you pay by PayPal, I'll charge $53, as I have to pay a PayPal fee as well.
These have to be booked in advance, and we have to arrange payment in advance.
See also the website for details of the show: http://www.medievaltimes.com/