Not wanna bother but, 50 euro for some htms and some shared codes which can be combined and make some easy funcions like tp,buffer etc is a LOT money.
Maybe including the database, which you simple cant make, it would be a good price!
My project include this cb with much more extras and features and the silver plan costs 34,99 ( for the whole pack ).
Maybe you need to re-think about your price, 10 euro its good price i quess!