Amazon is selling the dualshock 3 controller for the PS3 for $40.96 ($55 in most retail locations), so I was able to pick it up for free from gaminglagoon. So not only did I receive it at no expense to me, but I was able to use less points for the custom order thanks to Amazon's cheap prices...
Target's Boom Blox for $20.00 and Radio Shack's Dualshock 3 Controller for $29.99 looks great! Circuit City's Okami for $19.99 looks good too, but visiting all these stores will become a hassle.
If HDMI is the only cable you need at this point, it's cheaper to purchase from Amazon here for $0.77 + $3.50 shipping. But if you need a bunch of supplies and wires, go to MonoPrice.
Your old television was SDTV right? The cable box you have now is probably SDTV only and won't display 720p/1080i signals (not to mention lacking a HDMI port). Call your cable provider and have them send over a HDTV set-top box.
I wish they would make more battle packs for each of their theme collections for sub $10 pricetag. And with the shipping, it breaks the deal for me. Have you ever seen either two of these Castle minifig packs in any store?