Guerlain Kiss Kiss Maxi Shines (the more sheer, more sparkly cousins of Kiss Kiss lipsticks) are $28. Guerlain cosmetics generally, and these lipsticks specifically, are strongly fragranced, which isn’t for me.
Lychee Shine and Pastel Shine are indeed similar on the arm. Lychee Shine seemed to be a bit more pink, and Pastel Shine a bit more peach.
Guerlain Kiss Kiss Maxi Shine: White Shine, Lychee Shine, Pastel Shine, Rosa Shine, Rose Shine, Pink Shine, Nude Shine, Strawberry Shine, Peach Shine, Mango Shine, Orange Shine, Cherry Shine, Toffee Shine, Chocolate Shine, Violet Shine