Everything in life has a cost and brings consequences. If you buy a car, additional costs are generated such as fuel purchase, washing, maintenance, etc. If you have a child, additional fixed expenses are also generated, such as diapers, clothing, food, etc. In short, the point is that in life everything has a cost and following Jesus is no the exception.
Many believe that serving Jesus is like going on vacation to a five-star hotel, or that Jesus is an Aladdin or Santa Claus who fulfills all wishes. Jesus is more than all of that and therefore, to follow Him is a higher cost than everything else.