I saw in the flyers in the sunday papers that Walgreen's pharmacy has DTV converter boxes for $30. So if you're still looking for one, that may be a source. I'll double check and see if I can scan the ad.
Nothing in my Walgreens ad here either but Rite Aid Pharmacy is running an ad for an Access HD converter box for $30 with a disclaimer: "Brand/Style may vary by store". Regarding that particular converter box, wouldn't it be better named Access SD?