I am repairing shelves in a rented closet and found them that they thought they would do the job. While clearly not expensive, they seem incredibly cheap compared to the ones I replace (not expensive either, I just couldn't find them again).
Pack Of 6 ETECHMART Rustic Iron Metal L-Shaped Shelf Brackets, 5 Inch Wall-Mounted Support For DIY Open Shelving, Heavy-Duty Corner Brace Shelf Supporter In Black
29 Review
Collapsible Shelf Brackets - Heavy Duty Metal Folding Bracket For Wall Mounted Bench, Table, Or Shelf, Space Saving Hinge Design, 2 Pack, Maximum Load Capacity Of 150 Pounds (14 Inch, Black)
27 Review
ETECHMART 5 Inch Wall Mounted Floating Shelf Bracket, Pack Of 4 L Shape Heavy Duty Rustic Iron Metal Corner Brace Shelf Supporter For DIY Open Shelving Decoration - Black
20 Review
L Bracket Corner Brace, YUMORE 4'' X 1'' Stainless Steel Right Angle Bracket, 90 Degree Bracket Fastener For Wood Shelf, Furniture, Cabinet, 4 Pack
16 Review
32Oz Gorilla White Waterproof Patch & Seal Liquid For Effective Sealing (Single Pack)
30 Review
Silver Holographic Stars Glitter Grout Tile Additive 100G - Easy To Use For Tiles, Bathroom, Wet Room & Kitchen
14 Review
Pack Of 1 Natural Wood Color 8 Ounce Bottle Gorilla Wood Glue
42 Review
Hemway Glitter Grout Tile Additive: Sand Gold Sparkle For Your Bathroom, Kitchen And Wet Room Tiles - Easy To Use And Temperature Resistant!
10 Review