It's alot more than 5 Bob, alot. I think you'd be surprised to see how many people show up to these. I went to a show in a chinatown basement about 2 years ago, and geez there was a TON of people. My estimate is about 75-125.
Also, i know you grew up in the age of thrash but i hope you arent dissing the thrash revival of the 2010s with all the new bands that have come out...I know you were around in the 80s, and i wasnt born until 90, but to me this is my age of thrash. Bands like Warbringer, Gama Bomb, Bonded by Blood, Evile, Exmortus, and so many more are the ones that helped me get into metal in general and specifically thrash. SO to me and my generation this is our golden age.