Considering that everything you make is from scratch, this ideal is already very tempting. Homecooked foods, homeprepared meals, Pastries and sweets often fair much more, in terms of profit, as people love this nostalgic, fresh impression that the term gives.
I would expect to pay much more than I would at Supermarkets (for example!) as the quality of the ingredients is far superior and of course, the time and effort taken to make them and plus, some of the proceedings are going to Charity, which is also another plus. Consumers love to feel that they are helping, in some way - whether it be large or small, which will no doubt work in your favour too.
I would spoil myself and buy everything that takes my fancy! As for how much I would pay, I am not really fussed as good quality food comes with a good quality price!