Can't speak for Berkeley County or the Upstate. Can only tell you that, between uniforms, "encouraged" booster club support, ticket cost, etc., playing h.s. soccer at one school runs about $500/year.
As to the article in question, the player, as quoted says nothing about exposure or playing professionally. He talks about the toughness of the decision, the relative quality of training, and his desire to remain supportive of the high school program.
