Hi ya. I have been selling preserves for the past 6 years and there are a lot of rules and regulations for selling to the public.
Environmental health officers go around checking car boots sales.
In a nut shell youi must have your food hygiene certificate, and your kitchen registered with your local environmental health department and use new jars for your preserves.
If you PM me your email address I can send you my list of advice/information on selling preserves to the public.
I did post this advice on here a long time ago but not sure how to find it for you.
One of the clever mods may be able to find it for you.
I sell most of my preserves in12oz jars and sell them for £3.50 for ones made with cheaper ingredients and £3.80 for any strawberry and gooseberry ones.
I also sell several varieties of chilli jam in 8oz jars for £3.50 too.
If you are going to risk selling preserves in second hand jars you really should use new lids. If you aren't doing it by the book do be careful as you could be in trouble with environmental health.
If you are planning to make and sell it is worth doing everything properly as once you are set up it is really easy.
I have public liability insurance too.
Don't forget to label your jars clearly with the ingredients and highlight any possible allergens. You should also put you contact details on the jars too.
Do feel free to PM me if you have any other questions.
Oh, yes I nearly forgot I was at an event last week where another lady was selling preserves in4oz and 8oz jars and she was selling them for £4.50 for the 8oz and £3.50 for the 4oz which I thought was extremely expensive but I think she sold some.
I sold shed loads at the price I charged.