I pay $.06 per foot for coax, which includes shipping. I've bought and installed several miles of cheap coax over the last few decades, and I've never had a problem with any even though, unlike most installers, my customers have my name and phone number and I have a lot of the same customers I picked up when I started my current business in this market in 1995.
DirecTV mandates the use of PPC EX6XL connectors on its installations. They aren't any better than any other connectors, so the reason for the mandate is surely a cozy relationship whereby DirecTV get millions of connectors at a favorable price for its own use in exchange for which PPC gets the negotiating leverage to command a higher price from the installers who are required to buy that product. The eBay price for these connectors went up about 40% once they became the DirecTV mandated product, but they still are cheap and more importantly for you, they have fit onto every coax I have tried except for one really old (like 30 year old) quad shield flooded jacket buryable coax with an extra thick outer jacket. I still use crimp connectors with .357-.360 ID sleeves when I work at that site, which is a campground with over 300 drops.
If you search on eBay for them, just make sure you buy the ones that end in -XL, which is PPC's abbreviation for extra long, but that means they are the industry-standard length and can be compressed with the industry standard tool. If you buy PPC connectors that are not -XL, most tools won't compress them, though there is one that Home Depot sells with a length adjustment feature that can be set to compress them.
Here is a typical eBay "Buy it Now" auction for that product:
50 PPC EX6XL RG6 COMPRESSION CONNECTORS, $9.50 plus $2.49 shipping:http://www.ebay.com/itm/50-PPC-EX6XL...item2568fa4028