To accommodate these fluctuations and use resources evenly, it would seem reasonable to offer two tiers of  rapid and deferred, with air transportation being used for the rapid product.
( ( To ( ( accommodate ( these ( fluctuations ( and ( use resources ) ) ) ) ) evenly ) ) ( , ( it ( ( would ( ( ( ( seem reasonable ) ( to ( offer ( ( two tiers ) ( of ( ( rapid and ) deferred ) ) ) ) ) ) , ) ( with ( ( air transportation ) ( being ( used ( for ( the ( rapid product ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (TO To) (VP (VB accommodate) (NP (DT these) (NNS fluctuations) (CC and) (NN use) (NNS resources)) (ADVP (RB evenly))))) (, ,) (NP (PRP it)) (VP (MD would) (VP (VB seem) (ADJP (JJ reasonable)) (S (VP (TO to) (VP (VB offer) (NP (NP (CD two) (NNS tiers)) (PP (IN of) (NP (JJ rapid) (CC and) (JJ deferred))))))) (, ,) (PP (IN with) (NP (NP (NN air) (NN transportation)) (VP (VBG being) (VP (VBN used) (PP (IN for) (NP (DT the) (JJ rapid) (NN product))))))))) (. .)))
there are other possible forms of transformation, but they are either slower or more expensive.
( ( ( ( ( there ( are ( ( other ( possible forms ) ) ( of transformation ) ) ) ) , ) but ) ( they ( ( are either ) ( ( slower or ) ( more expensive ) ) ) ) ) . )
(ROOT (S (S (NP (EX there)) (VP (VBP are) (NP (NP (JJ other) (JJ possible) (NNS forms)) (PP (IN of) (NP (NN transformation)))))) (, ,) (CC but) (S (NP (PRP they)) (VP (VBP are) (DT either) (ADJP (ADJP (JJR slower)) (CC or) (ADJP (RBR more) (JJ expensive))))) (. .)))