Did you chain those? I'd suggest chaining something that most people don't have but are still easy to chain. Murkrows are 20%/10% (I think 20), and my shiny Murkrows all sold well. Bronzor might be a good idea, or event try Venonat.
OFFER: UT Shiny Absol, UT Shiny Electrike, UT Shiny Roselia, UT Shiny Pikachu, UT Shiny Ponyta, UT Shiny Girafarig, UT Shiny Tentacruel, Shiny Krikatot, Shiny Bibarel
You might have a hard time with those deals because all of your shinies are ridiculously common. All but one are easily chainable, and the other is only a hop and a swim away. Shiny Shellders tend to sell high, and you've gotta be proactive for Feebas (shoot for a VGC09 Milotic?). Just friendly words of advice-