Can't get page size larger than 30?

Yeah I def recommending doing what I suggested here, and then once you make that change, you should set 'Page size' on your Amazon source export to 100 and test the performance, and then try 1000 and test the performance again, and then just pick a final number between 100 - 1000 based on the results of your perf tests. If you dont have time to run this perf test, then just go with 100 and that should def be fast enough to get started.