By raising the cost of listing and reducing visibility, the titles you are searching for may only appear from high priced PowerSellers, or may not appear at all, even when they are offered.

EBay has been misleading customers to think that 4 stars means you are happy with the sale.

You may think that you are leaving a reasonable rating by giving a seller DSrs of 4 stars, but eBay's feedback system treats anything less than a 5 star rating as sub-standard and penalizes sellers for ratings that average under 4.60.