Restricting High Value Item Sales

[random_code]

I want to restrict the sale of high value items to ebay profiles with a rating of 11 or higher.

On listings where this is the case I include a line that states this, yet people with a zero rating can still purchase such items. 

I cannot cancel citing the correct reason so what are my options?

EDIT: Thanks for the replies; it is as I suspected. Will remove these high value items and sell them privately due to the lack of seller support on ebay.

[plpmr]

No matter what you put in the listings you cannot stop buyers purely based on their feedback 'score'.

On another matter you could be heading for problems listing a book as 'new' and then stating in the listing that it has - "has hardly been read".

that 'used' not 'new'.