Modify invalid price output

[Banana3021]

No description provided.

[codecov-commenter]

Codecov Report

Merging #183 (6276b68) into master (ee0d6ef) will decrease coverage by 5.68%.
The diff coverage is 5.17%.

@@             Coverage Diff              @@
##             master     #183      +/-   ##
============================================
- Coverage     51.28%   45.60%   -5.69%     
- Complexity      467      470       +3     
============================================
  Files           106      115       +9     
  Lines          2135     2423     +288     
  Branches        245      273      +28     
============================================
+ Hits           1095     1105      +10     
- Misses          977     1252     +275     
- Partials         63       66       +3     

Impacted Files	Coverage Δ
...in/java/seedu/address/commons/util/StringUtil.java	80.00% <0.00%> (-16.00%)	⬇️
...rc/main/java/seedu/address/logic/LogicManager.java	62.96% <0.00%> (-7.88%)	⬇️
...edu/address/logic/commands/AddShortcutCommand.java	0.00% <0.00%> (ø)
...seedu/address/logic/commands/CountdownCommand.java	0.00% <0.00%> (ø)
...java/seedu/address/logic/commands/FindCommand.java	100.00% <ø> (ø)
...ava/seedu/address/logic/commands/GroupCommand.java	0.00% <0.00%> (ø)
...du/address/logic/commands/ListShortcutCommand.java	0.00% <0.00%> (ø)
...ava/seedu/address/logic/commands/PriceCommand.java	0.00% <0.00%> (ø)
.../address/logic/commands/RemoveShortcutCommand.java	0.00% <0.00%> (ø)
...va/seedu/address/logic/commands/ReportCommand.java	0.00% <0.00%> (ø)
... and 37 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ee0d6ef...6276b68. Read the comment docs.

[yin72257]

LGTM

[Linda124]

LGTM