I would say a top-flight kicker would be worth a lot (even though, as HeavyHitta stated, thay aren't "football players"). My reasoning?
Right now, after 11 games, Neil Rackers is the top kicker in the league, having kicked 32/33 FG's and scored 110 points. I'll compare that to an "average " kicker, Josh Scobee, who is ranked #16 in the league (about the middle of 32 teams). He has kicked 16/21 FG's and scored 73 points.
If you extrapolate the statistics for both kickers out to a full 16 games, Rackers would end up with 160 points on the season vs. the average kicker (Scobee) who would have 106 points on the season. That is a difference of 54 points. That's equal to a skilled player scoring 9 more TD's for you. What would a RB or WR who scores 14 TD's per season command in salary vs. one who scores 5 TD's per season?
I am aware that one also must account for opportunity, etc., but that is one way to compare. To me, a top kicker is worth big $$not only for the points they are going to score for you, but also because their points often mean a "W" at the end of a game. We know that, the Giants know that...
As for Veneiterri, he's 14/18 with 67 points and ranked #23 on the year.
Just my two cents.