Any dollar amount you wish to contribute is fine.
( ( ( Any ( dollar amount ) ) ( you ( wish ( to contribute ) ) ) ) ( ( is fine ) . ) )
(ROOT (S (NP (NP (DT Any) (NN dollar) (NN amount)) (SBAR (S (NP (PRP you)) (VP (VBP wish) (S (VP (TO to) (VP (VB contribute)))))))) (VP (VBZ is) (ADJP (JJ fine))) (. .)))
You can only make contributions in $50 increments.
( You ( ( ( can only ) ( ( make contributions ) ( in ( ( $ 50 ) increments ) ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (MD can) (ADVP (RB only)) (VP (VB make) (NP (NNS contributions)) (PP (IN in) (NP (QP ($ $) (CD 50) (CD increments)))))) (. .)))