I completely agree with you. We have a lot of apps with >$14.99 price tag and as soon as there is a negative review the sales go down a lot.
I also agree with you with the momentum aspect. If you are gaining momentum a bad review can ruin it all for you. It happened to us on a $1.99 app in education which made it to top 25 in that category but 1 bad review and it was downhill ever since. It will be really helpful if Apple allows threaded review system in which the developer can comment on the reviewers comments and the reviewer receives an email notification to respond and change.
I also agree with you with the momentum aspect. If you are gaining momentum a bad review can ruin it all for you. It happened to us on a $1.99 app in education which made it to top 25 in that category but 1 bad review and it was downhill ever since. It will be really helpful if Apple allows threaded review system in which the developer can comment on the reviewers comments and the reviewer receives an email notification to respond and change.