I wanted to do a little more research for you and see which subs were being offered for $5 or less. The only way to do this online is to register for a pick-up/delivery account on their website. So I did that. Then I started to navigate through the ordering process and started to try and find the inexpensive subs.
Before I tell you what I found, let me tell you a little about the Quizno's ordering website. It is S-L-O-W. Once you click a category that you want to order from (ie. Subs, Sammies, Bowls, etc) the previous category items remain there from quite awhile after the heading for your new category appears at the top, which is a bit confusing in addition to being slow. It would certainly be quicker to pick up the phone and order that way. And you might have to order by phone anyway... the three Quizno's closest to me did not offer online ordering for pick-up or delivery. That seems to defeat the purpose of offering online ordering.
Essentially the 'small' size of all the subs I could find on the pick-up/delivery ordering website were between $4.39 and $4.99. There were not medium or large subs of any variety that were priced under $5.
Quizno's has been suffering since Subway started their $5 footlong promotion.
Subway offers 6" and footlong (12") subs. Quizno's small sub is substantially shorter than 6 inches, so comparing it in size or price to a Subway sandwich isn't useful.
According to Quizno's: "The price reductions on more than 37 Quiznos sandwiches, entrees and
other items, will be reflected on new in-store menu boards. The new
menu boards are divided into four core categories: Signature, Premium,
Everyday Value, and Flatbread Salads. Each category offers a single
price point for each size, and a simple option to create a
cost-effective combo meal."