(S (S (BASENP (JJ Hidden) (NNS fees)) (VP (VBP are) (VP (ADVP (RB often)) (VP (VP (RB not) (VBN shown)) (PP (IN until) (NP (BASENP (DT the) (NN end)) (PP (IN of) (NP (NP (BASENP (DT an) (NN ordering) (NN process)) (PP (IN on) (BASENP (DT the) (NN web)))) (SBAR (SBAR (WHNP (WDT which)) (S (VP (VP (VBZ prevents) (BASENP (NNS consumers))) (PP (IN from) (S (VP (VP (VBG making) (BASENP (DT an) (JJ informed) (NN choice))) (CC and) (VP (VBG comparing) (NP (BASENP (DT the) (JJ actual) (NNS prices)) (PP (IN of) (BASENP (JJ different) (NNS products) (CC and) (NNS services))))))))))) (PP (VBG according) (PP (TO to) (NP (BASENP (DT the) (NNP Office)) (PP (IN of) (BASENP (NNP Fair) (NNP Trading))))))))))))))) (PERIOD .))