In the Collins Cobuild Compact English Learner's Dictionary, the word 'wealth' is noted as(along with one other difinition):
N-SING a wealth of something means a very large amount of it; LITERRALLY, and it gave this example sentence:
The city boasts a wealth of beautiful churches.
Does the word 'amount' right under this sentential context -- maybe the word 'number' be moreter suitable?