The NAAFI bacon comes from Goodwood's own farm, organic (if that's important to you). The bacon roll is very tasty indeed and I don't find a fiver unreasonable at an event like the Revival.
However, as pointed out, you are not obliged to buy anything on site. Unlike many events which relieve you of anything edible on entry, at Goodwood you can take in as much provender as you can carry.
~iw
