Import costing from factory in China through selling in UK online costing

I import products from China and sell to UK retail. So i am looking for a system that can replace spreadsheets and other tools so my back office is in one place. i also use podia and zoho CRM. So the model i have to currently use an excel for is: > Take the FOB China price > Add the import costs > Add margins to achieve the selling price > Apply marketing costs > fix selling price So a system that we can find old costing and quotes selling prices etc. Would also be good to quote customers from this system.