Something to keep in mind, if you have Awesome Guild Store installed then getting information from the trader will not work the same as when you don't have AGS installed. The vanilla routines won't work with AGS.
I am really not a fan of exporting to spreadsheets. It takes time to do it and the output will always be in Lua and not CSV or something more convenient.
For example:
Code:
["SALES"] =
{
["version"] = 1,
["YourGuildName"] =
{
[1] = "@Ashjunkie&@Lcs_Flores&|H0:item:46129:30:1:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0|h|h&200&1630085615&false&4000&Real Guild Best Guild&Quicksilver Ingot&rr01 white normal materials",
},
The developers do not allow us to export in specific file formats or to specific file names when we save to the saved variables file.
So the question is, do you absolutely "
need" to export it? Would 180 days worth of information available in game with search capabilities be sufficient? For the items you have listed to sell on a trader for all the different guilds you are in.