By Cristina-Iulia Bucur https://orcid.org/0000-0002-7114-6459

Review Details

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Reviewer has chosen not to be Anonymous

Summary of paper in a few sentences (summary of changes and improvements for second round reviews):

As digital economy and particularly, e-commerce, seems to experience a rapid growth in recent years in Southeast Asia, in this article the authors propose to include data from the online marketplaces available in Indonesia to compute commodity-level and expenditure group-level CPI (Consumer Price Index). Moreover, the authors propose to compare these two computed CPIs from the online marketplaces to the CPI computed using the data from BPS-Statistics Indonesia, a non-ministerial government agency that conducts various studies, among which is the calculation of CPI per commodity baskets per city. This comparison between different CPI calculations (from the online marketplaces to the statistics collected by onsite retailers by BPS) is interesting in the context of the rapidly evolving online market and also to see if and how the e-commerce affects the CPI.

Reasons to accept:

- the general idea of the article is interesting, especially in the context of the evolving e-commerce market;
- the presentation of the general and some particular workflows is clear;
- the figures and tables now contain more explanations;
- some figures have been annotated and now have the legend included as well;
- the data used is available in a github repository;
- more explanations and interpretations have been given for certain figures and tables;
- removal of certain tables and figures that did not provide much insights;
- the general structure of the article has slight improvements from the previous version;
- more explanations and interpretations are given to the results;
- the revision of the use of the English language improved readability, slight mistakes still present.

Reasons to reject:

N/A

Nanopublication comments:

Further comments:

Reviewer has chosen to be Anonymous

Summary of paper in a few sentences (summary of changes and improvements for second round reviews):

The authors made some efforts to improve the presentation of tables and figures. The interpretation of the results has also been strengthened slightly. The contribution of the study to the existing literature still appears to be very modest.

Reasons to accept:

- The topic is interesting and relevant in the current business environment.
- The study makes a good attempt to use online marketplace data, an approach which can potentially generate further research effort in exploring various use of such type of data.
- The authors provide very detailed data extraction and processing steps which would allow future researchers to replicate the study in different settings.

Reasons to reject:

Modest contribution of the study to the existing knowledge. It appears that the revision presented in this version is minimum.

Nanopublication comments:

Further comments:

Unfortunately, some typographical and grammatical errors appeared in the first version are still left uncorrected in the revision. A thorough round of proof-reading will be required before the paper can be published online.