Gelish dilemma with pricing

[tracey louise]

can i ask how much extra everyone charges if they apply gelish over acrylic or gel extensions? im asking as i initally was going to charge an extra £10 as i would normally charge £15 for gelish by itself but i used it to do a french manicure instead of using my normal hard gel for the white as its actually easier and means less filing when they come back for a rebalance so how can i charge extra for some gelish services and not for others especially as using it for a french was my choice as it was easier for me.

here is my normal price list

gel or acrylic overlay £20
gel or acrylic extensions £25
gelish £15

then i would normally charge extra for glitter and nail art etc..

i hope that makes sense.