IDK how the number of viewers for golf stacks up against Nascar but I don't think judgments can be made on just 1 week's worth of info.
A while back
@FLRacingFan fan had posted stats regarding the number of viewers that streamed Nascar content and it was not that high. IDK about illegal streams or even if they should be counted.
IDK what people feel is a reasonable amount to pay for cable/sat/streaming service but I think that in addition to your budget your perspective is really important. If you spend 3 bucks a day on coffee, energy drinks, lottery tickets or other things you could take some of that money and get anice plan through Playstation Vue that gets you all the Nascar programming plus a lot of other good stuff for 50 bucks a month. An antenna will get most folks all the over the air stations so you would be pretty well set.
IDK why NBC has so many Cup races on NBCS but IDK what shows are on the main network at the same time either.