I am looking to mainly buy 100 cash shop credits and looking to purchase for around 9m - 10m if possible? Looking to purchase about 27 more roughly but shall update the amount required as I will be looking to purchase quite often for that set price range.

i'll do 9.8m per 100.

Just to clarify, are you looking for 27 CSC, or 2700 CSC (27 cards of 100 CSC each) (since you mention 27 more but also 9m-10m...)?