Here is my sortable spreadsheet of stores, showing where I have found freebies and cheapies (25L and under)! It is a work-in-progress, and you know there are A LOT of stores out there, which are constantly updating, so take what you can get out of it! There is also a tab of events and freebie in-world groups, which I haven't hardly touched, but I hope this helps you find some great things!
I know, I haven't figured out how to change the size of the embedded list above, and it is a huge list, so you might just be better off going to Google Sheets to see it: Skyler's SL Freebies & Cheapies Shopping List
Don't forget to hit up my Freebie Fashion Blogs page for more resources!