According to Standard Media Index data, the second round of playoff action is when the ad dollars really start rolling in, especially for Turner Sports. During last season’s opening round of postseason action, the average unit cost in TNT’s 23 televised NBA games was $102,820 per 30 seconds of airtime. The going rate for a spot in the conference semis jumped 41% to $145,400 a pop, per SMI, a research firm that harvests ad sales data from the invoices of the largest media-buying agencies.