Auction Ads Minprice & Maxprice: keywords

Can anyone get these to work? When I try to use them like this:

"minprice:35 maxprice:1200 keyword"

Code (markup):

or

"minprice:35 keyword"

Code (markup):

It gives me ads unrelated to the keyword, such as iPods and Playstation ads.

 

I use it the other way around

keyword minprice:50 maxprice:100

and get still related ads.Just give it a try

 

Thanks I will give that a shot

Edit: Just tried this:

auctionads_ad_kw =  "ford mustang minprice:35 maxprice:1200";

Code (markup):

and as soon as I change it I get unrelated ads again