I can confirm this does work using Game Hacker v2.3.6. on the current game version of Reaper v1.3.6-57.
* I recommend making a backup with "Titanium Backup" before proceeding, just in case. *
launch game hacker, (haven't yet tested this on Game Guardian) launch Reaper, then go to one of the available "Shop" ('s). Do a Fuzzy search for the cost of the selected item, I only had to modify 2 values.
I wanted to look less suspicious in case they watch for theses kind of changes on server side, so I changed the value of said item to "-100000", instead of -999999999999.
Only drawback is that if you accidentally sell the same modified item back to the Shop it will cost you the difference of original modified value.
Happy hacking and thanks to battousa for pointing this out.
