How much would a replacement bowl and cover cost for the Braun k600

It sounds like the cement that holds the two sections of the sleeve together has failed, causing the sleeve to become loose and rotate on the metal post. Unfortunately, this is not a repair that can be easily done at home, and it may not be cost-effective to have it repaired professionally, as parts for this model may be difficult to find.
One possible solution is to try to replace the sleeve with a new one, if it is still available. You may be able to find a replacement sleeve online or through a Braun authorized repair center. Alternatively, you could try contacting Braun customer service to see if they have any suggestions or solutions for this issue.
If a replacement sleeve is not available, or if the cost of repair is too high, you may need to consider purchasing a new food processor. However, it's worth noting that Braun food processors are known for their durability and longevity, so it's possible that a new one will last you for many years to come.

thats a braun

found this parts supplier link
Braun 3202 Food Processor Parts

See ebay if you haven't got this already I am just listing one and lid. Ok its states for a 4243 but they are interchangble I have found

I have a chopping blade for the 1000ml bowl Braun food processor.

You can download the users manual from

http://www.retrevo.com/s/Braun-K600-Food-Processors-review-manual/id/23284ag509/t/1-2/

You can order a replacement bowl through one of their Service Partners, here is the link;
http://www.braun.com/us/consumer-service.html?country=United+Kingdom+of+Great+Britain+and+Northern+Ireland&continent=eu&action=country

Did you find a lid? I have a used one and would gladly send it to you for the cost of shipping from NH.
I warped the bowl for mine in the dishwasher and have since replaced it with a new food processor so would be happy to give away the useful parts (lid, pusher, blade, discs & carrier).

I have a lid never used if still interested:)

http://abtecparts.com/braunfoodproc.htm
I need a lid for mine here in Bristol RI but I did see that the bowl was still available. If the site I sent doesnt have the one you need try a google search (Braun 4262 ) and there were a few sites that had the mix bowl but no lid

A quick Google search using the term "braun K600 spares site:au" reveals an internet trader in Victoria who might stock what you're after. A.