ComptonJapan
Banned
It was previously
Can I edit my rewards after I've launched my project?
If a reward tier doesn't have any backers, you're welcome to make any changes to it or delete it entirely. If a reward tier does have backers associated with it, you won't be able to make any chang...
help.kickstarter.com
"If a reward tier doesn't have any backers, you're welcome to make any changes to it or delete it entirely.
If a reward tier does have backers associated with it, you won't be able to make any changes to it (except for specifying new places that you'd like to offer shipping to)."
Can a project be edited after launching?
When a project ends, the “Campaign” tab (the page with the project’s description, rewards, and funding details) is preserved and no further edits can be made. If there is new information you would ...
help.kickstarter.com
" When a project ends, the “Campaign” tab (the page with the project’s description, rewards, and funding details) is preserved and no further edits can be made. If there is new information you would like to share with your backers, we encourage you to post a project update."
Unless Kickstarter can edit rewards upon the request of the creators, then no.