Part of planning for a new conservatory should include what use are you going to put the room to. If you plan to use the conservatory year-round, then heating it is going to be necessary during the colder months.
Not all conservatories are equal. Some conservatory designs can go for prices well in excess of £40,000 or £50,000. But if you (like me) don’t have that sort of money lying around, then what type of conservatory can you get on a vastly smaller budget.
In terms of the prices in the market, you can go here for more information