As some others here mentioned, the Polk Monitor Series II 30, 40, 50, 60, and 70 disappeared late this past fall. Polk renumbered the new line in a similar fashion, just replacing the "0" with a "5" in all of the models. Very little has changed in the refreshed series. Polk changed the driver layout and slightly increased the size of the cabinets, but they still have the same drivers and sound virtually identical. The most substantial change has been in the price. Right now Newegg has the new cherry 75T's on sale for by far the cheapest I've seen so far at $170/each shipped after applying the coupon code. (EMCXSXL228) The 70's would occasionally go on sale for $160/each, and even $150/each in a few instances. If I were looking for a pair of speakers like the 70's today, I'd pay $170/each. They're by no means "reference level" speakers, but they ARE among the best values out there if you wait for a good sale. And considering you're coming from a HTIB, you'd be blown away by a pair of 70's.http://www.newegg.com/Product/Product.aspx?Item=N82E16882290279
Last year I trolled Newegg for about 6 months to determine just how low they'd go on the speakers I was interested in, and I ended up building a whole 9.0 setup pair by pair as they went on sale and saved quite a bit. I've had a pair of Series II 70's, 60's, 40's, 30's, and a CS2 since last summer, and I've been very pleased with their performance. (granted I also coupled them with a HSU VTF-2 MK4)
As far as a stigma against Newegg, a number of people have had issues with their shipping and return policies. Personally, I've had only positive experiences dealing with Newegg. The Polk PSW505 I ordered a while back arrived damaged and sounded like sh*t, they took it back and returned every dime. (which I then spent on a wonderful HSU sub) I also received a Monitor 40 with a damaged crossover, and they did a quick and completely free exchange for me.
As far as speaker cable, it will NOT be included with a speaker like the Monitors. (or any other decent speaker that I've seen) For your application, you could go the inexpensive route and run something like this and connect it with the binding posts:http://www.amazon.com/AH14100SR-14-Gauge-Speaker-Wire-feet/dp/B002HPNDDW/ref=sr_1_4?ie=UTF8&qid=1365617823&sr=8-4&keywords=speaker+cable
OR spend more money and connect the speakers with something like these:http://www.amazon.com/GLS-Audio-Premium-Gauge-Speaker/dp/B006JSR4QU/ref=sr_1_16?ie=UTF8&qid=1365617823&sr=8-16&keywords=speaker+cablehttp://www.amazon.com/Sewell-Silverback-Banana-Plugs-Screw/dp/B005BT2KJE/ref=sr_1_2?s=electronics&ie=UTF8&qid=1365617998&sr=1-2&keywords=sewell+banana+plugs
Either way, good luck and have fun!